B2B

Measure the conductivity or ion content of a solution with this waterproof Cobra SMARTsense Conductivity sensor. Quick and easy connection via Bluetooth and the free measureAPP Conductivity: Range: 0 - 20000 µS/cm Resolution: 8 µS/cm Temperature: Range: 0 - 100 °C Resolution: 0.1 °C Sample rate: 10 Hz Water resistant to IP67. Sensor requires a battery (CR2032) which is not included.

With this Cobra SMARTsense Drop Counter sensor, single drops can be counted and directly converted into a volume. If you connect a pH electrode, a titration can be carried out easily and precisely. Easy to clamp to a retort stand and with an integrated holder to use a temperature sensor. •Quick and easy connection via Bluetooth and the free measureAPP •Contains a USB-C rechargeable lithium polymer battery •Up to 50 hours use on one battery charge •Drop Counter: oRange: 0 - ∞ oResolution:30 Imp/s •pH: oRange: 0 - 14 oResolution: 0.01 •Sample rate: 50 Hz •The PH-Electrode is sold separately

Poor air quality due to a high proportion of carbon dioxide in the indoor air reduces concentration and performance. Use this Cobra SMARTsense CO2 sensor to measure the carbon dioxide content of the air and the influence of, for example, the photosynthesis of indoor plants. •Quick and easy connection via Bluetooth and the free measureAPP •Contains a USB-C rechargeable lithium polymer battery •Up to 50 hours use on one battery charge •Range: 0 - 100000 ppm •Resolution: 2 ppm •Sample rate: 1 Hz Accessory: Plug with hole for use with reaction vessels, contact us for details.

Measure the oxygen concentration of solutions in biology, environmental sciences and chemistry. Produce graphs showing how the oxygen content varies in the classroom throughout the day, measure the respiration of small organisms and perform photosynthesis experiments. •Quick and easy connection via Bluetooth and the free measureAPP •Contains a USB-C rechargeable lithium polymer battery •Up to 50 hours use on one battery charge •Range: 0 - 20 mg/l •Resolution: 0.01 mg/l •Sample rate: 100 Hz •Including oxygen probe for Oxygen in air and water.

Continuously monitor the heart rate before, during and after exercise. This Cobra SMARTsense Pulse sensor can be used to conduct various student experiments in the field of human and electrophysiology. •Quick and easy connection via Bluetooth and the free measureAPP •Contains a USB-C rechargeable lithium polymer battery •Up to 50 hours use on one battery charge •Range: 30 - 200 bpm •Resolution: 1 bpm •Sample rate: 10 Hz •Includes ear clip.

Cobra SMARTsense Sound sensor including microphone. •Quick and easy connection via Bluetooth and the free measureAPP •Contains a USB-C rechargeable lithium polymer battery •Up to 50 hours use on one battery charge •Sound level: oRange: 55 - 110 dB(A) oResolution: 0.1 dB(A) oSample rate: 10 Hz •Sound signal: oMicrophone frequency range: 100 - 15000 Hz oSample rate: 32 kHz (USB), 8 kHz (Bluetooth)

Use this Cobra SMARTsense Force Acceleration sensor to measure the acceleration resulting from an external force. •Quick and easy connection via Bluetooth and the free measureAPP •Contains a USB-C rechargeable lithium polymer battery •Up to 50 hours use on one battery charge •Force: oRange: ±50 N oResolution: 30 mN •Acceleration: oRange: ±16 g oResolution: 0.01 g •Gyroscope: oRange: ±34.9 rad/s oResolution: 0.01 rad/s •Sample rate: 1000 Hz

Measure current and voltage with one sensor. Calculate the power and energy in renewable energy systems and in electrochemistry. Quick and easy connection via Bluetooth and the free measureAPP Contains a USB-C rechargeable lithium polymer battery Up to 50 hours use on one battery charge Voltage: •Range: ±5 V; ±30 V •Resolution:1 mV; 20 mV Current: •Range: ±180 mA; ±1 A •Resolution: 40 µA; 0.5 mA •Sample rate: 100 Hz

Measure the magnetic field of permanent magnets, coils or simply the earth's magnetic field. Thanks to the 3 measuring axes, the magnitude and direction of the magnetic field can be determined at any point in space. •Quick and easy connection via Bluetooth and the free measureAPP •Contains a USB-C rechargeable lithium polymer battery •Up to 50 hours use on one battery charge •Range: ±130 mT; ±5 mT •Resolution: 0.1 mT; 0.001 mT •Sample rate: 1000 Hz

Measure the surface temperature of different objects, for example to investigate the thermal conductivity of different metals. Quick and easy connection via Bluetooth and the free measureAPP Contains a USB-C rechargeable lithium polymer battery Up to 50 hours use on one battery charge •Range: -25 ... 125 °C •Resolution: 0.1 °C •Sample rate: 10 Hz

A SMARTsense sensor set supporting 11 experiments on the following topics: •Photosynthesis (2 methods) •Transpiration of leaves •Breathing (CO2 and O2 measurement) •Glycolysis (2 methods) •Ionic permeability of the cell membrane •Determination of the Michaelis constant •Enzyme inhibition •Substrate inhibition of enzymes •Enzymatic activity of catalase The Cobra SMARTsense sensors Temperature, pH, Conductivity, Light, Pressure, CO2 and Oxygen are used in all 11 experiments in combination with tablets (iOS and Android) and smartphones (Android). Contents •Cobra SMARTsense Temperature: Measuring range: 40 - 120 ° C, resolution: 0.01 ° C, sampling rate: 10 Hz •Cobra SMARTsense pH: Measuring range: 0 - 14, resolution: 0.01, sampling rate: 10 Hz •Cobra SMARTsense Conductivity: Measuring range: 0 - 20,000 μS / cm, 0 - 100 ° C, resolution: 1 μS / cm, 0.1 ° C, sampling rate: 10 Hz •Cobra SMARTsense Light: Measuring range: 1 lx - 128 klx, resolution: 0.1 lx, sampling rate: 10 Hz •Cobra SMARTsense Pressure: Measuring range: 20 - 400 kPa, resolution: 0.1 kPa, sampling rate: 800 Hz •Cobra SMARTsense CO2: Measuring range: 0 - 100,000 ppm, resolution: 2 ppm, sampling rate: 1 Hz •Cobra SMARTsense Oxygen: Measuring range: 0 - 20 mg / l, resolution: 0.01 mg / l, sampling rate: 100 Hz •Lamp socket with reflector, diameter 20 cm, and 120 W filament lamp •Special glassware •Special stand material for experiment setups •Experiment manual

Heart rate, pulse, lung volume, body temperature and blood pressure are the core parameters of human and electrophysiology. With this set, you can easily teach students the meaning of these terms. This set contains Cobra SMARTsense sensors that are easy to operate and take measurements in real time. Equipment set allowing the performance of 9 experiments about the following topics: •Electrophysiology of the heart (3 experiments) •Blood circulation (1 experiments) •Skin temperature (1 experiment) •Lung function, lung volume (3 experiments) •Lung diseases (1 experiment) The set consists of all necessary components for the experiments: •Stable, stackable storage box with moulded foam insert •Cobra SMARTsense ECG •Cobra SMARTsense Pulse •Cobra SMARTsense Temperature •Cobra SMARTsense Spirometer •Blood pressure measurement combination

This set of datalogging devices is ideally suited to shared-work experiments with school groups for outdoor measurements of ecological data and works with mobile devices (iOS and Android). •Whether in the classroom, outdoors or on project days: in this robust aluminium case, you will always find the right device for carrying out fascinating experiments with school groups. •Up to 4 groups can work on and investigate interesting topics in parallel. •Works with all iOS and Android devices •Download free app from Apple App Store or Google PlayStore •Students can evaluate the data at home, as a homework assignment. Contents; •Robust aluminium case •1 x Cobra SMARTsense - Relative Humidity, 0 - 100 % •1 x Cobra SMARTsense - pH, 0 - 14 •1 x Cobra SMARTsense - Conductivity, 0 - 20000 µS/cm •1 x Cobra SMARTsense - Temperature, - 40 - 120 °C •1 x Cobra SMARTsense - Absolute Pressure, 20 - 400 kPa •1 x Cobra SMARTsense - Light, 1 - 128 kLX •1 x Cobra SMARTsense - Colorimeter for the measurement of turbidity, 0 - 100 % •1 x pH electrode, plastic, gel-filled •1 x 100 red pH 4 buffer tablets •1 x 100 green pH 10 buffer tablets •5 x 20 ml calibration solution for conductivity electrode •2 x protective case for pH and conductivity electrodes •1 x 120 labels •4 x 100 mL square flange (HDPE) •2 x 250 mL PP laboratory beaker

Tip Tinner Cleaner 23G

White plastic screw connections 30 mm diameter, 19 mm high.

Bulbs, MES Cap, 1.5 V, 200 mA.

The Lascells E-Field Detector provides a new and novel way to demonstrate charge. This highly sensitive electronic device is an essential piece of equipment in the Physics teachers’ armoury as it can detect very small charges and their polarity, as well as charge at a distance. Until now, in the school science lab, it has only been possible to demonstrate opposite and like charges by repulsion and attraction experiments or the very delicate Gold Leaf Electroscope. This unique, robust piece of equipment allows the Physics teacher to clearly show whether a positive or negative charge has been created and in which directions the electrons have moved. The LED array indicates not only positive or negative charge, but also its size. The external voltmeter sockets allow for quantitative measurements. Very quick and easy to setup, the Lascells E-Field Detector is a benefit for specialist and non-specialist teachers alike and is so easy to use that students could gather data themselves. The comprehensive instructions include both traditional experiments that benefit from the use of the Lascells E-field Detector along with new exciting ways to look at charge. This makes difficult concepts more understandable and engaging for the students. This is a real game changer in the subject of electrostatics. 24V AC-DC Adapter included.

The Proof Plane is a device for transferring charge from a charged object. Charge a plastic strip by rubbing with a cloth. Touch the charged object with the proof plane. Charge will be shared between the object and the Proof Plane so both will have the same charge sign. Show this using the E-Field Detector (EL220000) If you are using a Faraday’s Pail touch the inside of the Pail with the charged Proof Plane. Charge will be transferred and immediately move to the outside of the Pail. If the process is repeated equal amounts of charge will be transferred each time. If the Proof Plane is charged by induction the charge sign will be opposite and usually greater than by simple charge sharing. Show these effects using the E-Field Detector.

The Earth Grounding Plate is designed for use with The Lascells E-Field Detector but can also be used in any situation where an earthed working surface is required to neutralise electrostatic charge. Place the Grounding Plate on the bench with the E-Field Detector on top. Using the detector Earth Lead connect the green Earth socket on the detector to the metal screw on the grounding plate. Use a connecting lead to also connect from the green Earth socket to a suitable Earth point such as a metal water pipe or similar.

The Charge Separation Rods are designed for use with the Lascells E-Field Detector (EL220000). Arrange the rods so that they are touching along an axis. Bring a charged object near one end of the rods and use a pencil or similar to slide the rods apart touching only the feet and not the metal part of the rods. When the charged object is removed test the charge on the two separated rods. If the charged object is negative, electrons are repelled to the rod furthest away leaving the rod closest to the object positively charged. By moving the rods apart the electrons cannot return so the furthest has an overall negative charge and the nearest an equivalent positive charge.

Spare drive belt for EL85100.

Mini Thermo-Anemometer

This carbon dioxide detector measures CO2, air temperature and humidity. A useful tool to help to regulate ventilation in enclosed spaces such as classrooms, indicating when fresh air should be allowed in to help remove air that contains virus particles and to help prevent the spread of Covid-19. People exhale carbon dioxide when they breath out. If there is a build-up of this in an area it can indicate that ventilation needs improving. This device adopts a high-precision non-dispersive infrared CO2 sensor that detects CO2 accurately and sensitively. Containing a high-capacity rechargeable lithium battery, making it easily portable. To preserve electricity, it powers off after 30 minutes of inactivity. A USB charging cable is also provided allowing simple recharging using either a PC or mains plug. Product specifications: CO2 concentration measurement; •Range: 0 to 9999ppm •Accuracy: +/-75ppm / +/-5% of rdg •Resolution: 1ppm Temperature and humidity detection; •Temperature range: -20 to +70°C •Temperature accuracy: +/-2°C •Temperature resolution: 0.1°C •Humidity range: 0 to 100%RH •Humidity accuracy: +/- 3.5%RH (20 to 80%RH) otherwise +/-5%RH •Humidity resolution: 0.1%RH Battery: 1000mAh rechargeable lithium battery Battery charge: USB 5V charging Dimensions: 90mm x 60mm x 47mm LCD dimensions: 49mm x 38mm Operating conditions: 0 to +50°C

Observe living creatures in this ventilated viewing pot with 5x magnification lid. Clear base with micro ruler.

These Pooters are designed not to be perfectly round so that bugs will find a crevice to hide in and are easier to observe. The jar contains two holes; one of which has a fine mesh covering to prevent bugs being drawn into the mouth. Two lengths of tubing (removable for easy washing) are supplied.

Use in conjunction with an accurate millisecond timer to calculate acceleration due to gravity. The timer starts when the ball bearing is released from the release unit, the base has an integral vibration sensor which stops the clock as the ball bearing hits the impact plate. Replace the ball bearing, reset the timer and the unit is ready to go again. When used with Lascells timers or other models with de-bounced inputs no additional power is required. If the timer used is found to have “bouncy” inputs then a 4 second delay can be added to the impact plate outputs by powering the unit with 9 V DC. Supplied with: Full instructions Base, release unit, 12 mm ball bearing, 8 mm ball bearing Features: Easy setup with integral vibration sensor No power required for millisecond timers with de-bounced inputs Two ball bearings allowing comparison of different masses Over-moulded rubber landing plate. Integrated de-bounce circuitry to add 4 second delay to outputs. (9 V DC required)

The Lascells Millisecond Timer is a fully functional, easy to use millisecond timer and has a clear, 4 digit LED display. Three sockets provide START and STOP inputs which respond to any change of switch settings i.e. normally closed to open or vice versa making triggering very simple and reliable. A single switch changes the timer from GATE 1 start and stop to GATE 1 start GATE 2 stop. In addition 3.5 mm sockets are provided to allow Lascells timer light gates to be connected. The timer has millisecond resolution for times up to 10 seconds and then the display auto-ranges for longer periods up to 9999s with corresponding reduced resolution. Supplied with mains plug-top adaptor and full instructions.

This science storage trolley from Gratnells offers several advantages over standard trolleys, including extra storage, larger castors, enclosed metal trolley frames and stop-safe runners. • 25% extra storage • Larger castors for improved stability • Enclosed metal framing, to reduce cleaning needs and boost security • Improved ergonomic design • Versatile storage, with a wide range of modern colour options • New stop safe runners • Assembly Required • 16 tropical orange shallow trays • Dimensions 1065 x 690 x 435 mm

This science storage trolley from Gratnells offers several advantages over standard trolleys, including extra storage, larger castors, enclosed metal trolley frames and stop-safe runners. • 25% extra storage • Larger castors for improved stability • Enclosed metal framing, to reduce cleaning needs and boost security • Improved ergonomic design • Versatile storage, with a wide range of modern colour options • New stop safe runners • Assembly Required • 16 sunshine yellow shallow trays • Dimensions 1065 x 690 x 435 mm

This science storage trolley from Gratnells offers several advantages over standard trolleys, including extra storage, larger castors, enclosed metal trolley frames and stop-safe runners. • 25% extra storage • Larger castors for improved stability • Enclosed metal framing, to reduce cleaning needs and boost security • Improved ergonomic design • Versatile storage, with a wide range of modern colour options • New stop safe runners • Assembly Required • 16 plum purple shallow trays • Dimensions 1065 x 690 x 435 mm

This science storage trolley from Gratnells offers several advantages over standard trolleys, including extra storage, larger castors, enclosed metal trolley frames and stop-safe runners. • 25% extra storage • Larger castors for improved stability • Enclosed metal framing, to reduce cleaning needs and boost security • Improved ergonomic design • Versatile storage, with a wide range of modern colour options • New stop safe runners • Assembly Required • 16 royal blue shallow trays • Dimensions 1065 x 690 x 435 mm

This science storage trolley from Gratnells offers several advantages over standard trolleys, including extra storage, larger castors, enclosed metal trolley frames and stop-safe runners. • 25% extra storage • Larger castors for improved stability • Enclosed metal framing, to reduce cleaning needs and boost security • Improved ergonomic design • Versatile storage, with a wide range of modern colour options • New stop safe runners • Assembly Required • 16 flame red shallow trays • Dimensions 1065 x 690 x 435 mm

This science storage trolley from Gratnells offers several advantages over standard trolleys, including extra storage, larger castors, enclosed metal trolley frames and stop-safe runners. • 25% extra storage • Larger castors for improved stability • Enclosed metal framing, to reduce cleaning needs and boost security • Improved ergonomic design • Versatile storage, with a wide range of modern colour options • New stop safe runners • Assembly Required • 16 grass green shallow trays • Dimensions 1065 x 690 x 435 mm

This science storage trolley from Gratnells offers several advantages over standard trolleys, including extra storage, larger castors, enclosed metal trolley frames and stop-safe runners. • 25% extra storage • Larger castors for improved stability • Enclosed metal framing, to reduce cleaning needs and boost security • Improved ergonomic design • Versatile storage, with a wide range of modern colour options • New stop safe runners • Assembly Required • 16 light grey shallow trays • Dimensions 1065 x 690 x 435 mm

This science storage trolley from Gratnells offers several advantages over standard trolleys, including extra storage, larger castors, enclosed metal trolley frames and stop-safe runners. • 25% extra storage • Larger castors for improved stability • Enclosed metal framing, to reduce cleaning needs and boost security • Improved ergonomic design • Versatile storage, with a wide range of modern colour options • New stop safe runners • Assembly Required • 16 translucent shallow trays • Dimensions 1065 x 690 x 435 mm

This science storage trolley from Gratnells offers several advantages over standard trolleys, including extra storage, larger castors, enclosed metal trolley frames and stop-safe runners. • 25% extra storage • Larger castors for improved stability • Enclosed metal framing, to reduce cleaning needs and boost security • Improved ergonomic design • Versatile storage, with a wide range of modern colour options • New stop safe runners • Assembly Required • 16 lime jolly shallow trays • Dimensions 1065 x 690 x 435 mm

This science storage trolley from Gratnells offers several advantages over standard trolleys, including extra storage, larger castors, enclosed metal trolley frames and stop-safe runners. • 25% extra storage • Larger castors for improved stability • Enclosed metal framing, to reduce cleaning needs and boost security • Improved ergonomic design • Versatile storage, with a wide range of modern colour options • New stop safe runners • Assembly Required • 8 tropical orange deep trays • Dimensions 1065 x 690 x 435 mm

This science storage trolley from Gratnells offers several advantages over standard trolleys, including extra storage, larger castors, enclosed metal trolley frames and stop-safe runners. • 25% extra storage • Larger castors for improved stability • Enclosed metal framing, to reduce cleaning needs and boost security • Improved ergonomic design • Versatile storage, with a wide range of modern colour options • New stop safe runners • Assembly Required • 8 sunshine yellow deep trays • Dimensions 1065 x 690 x 435 mm

This science storage trolley from Gratnells offers several advantages over standard trolleys, including extra storage, larger castors, enclosed metal trolley frames and stop-safe runners. • 25% extra storage • Larger castors for improved stability • Enclosed metal framing, to reduce cleaning needs and boost security • Improved ergonomic design • Versatile storage, with a wide range of modern colour options • New stop safe runners • Assembly Required • 8 plum purple deep trays • Dimensions 1065 x 690 x 435 mm

This science storage trolley from Gratnells offers several advantages over standard trolleys, including extra storage, larger castors, enclosed metal trolley frames and stop-safe runners. • 25% extra storage • Larger castors for improved stability • Enclosed metal framing, to reduce cleaning needs and boost security • Improved ergonomic design • Versatile storage, with a wide range of modern colour options • New stop safe runners • Assembly Required • 8 royal blue deep trays • Dimensions 1065 x 690 x 435 mm

This science storage trolley from Gratnells offers several advantages over standard trolleys, including extra storage, larger castors, enclosed metal trolley frames and stop-safe runners. • 25% extra storage • Larger castors for improved stability • Enclosed metal framing, to reduce cleaning needs and boost security • Improved ergonomic design • Versatile storage, with a wide range of modern colour options • New stop safe runners • Assembly Required • 8 flame red deep trays • Dimensions 1065 x 690 x 435 mm

This science storage trolley from Gratnells offers several advantages over standard trolleys, including extra storage, larger castors, enclosed metal trolley frames and stop-safe runners. • 25% extra storage • Larger castors for improved stability • Enclosed metal framing, to reduce cleaning needs and boost security • Improved ergonomic design • Versatile storage, with a wide range of modern colour options • New stop safe runners • Assembly Required • 8 grass green deep trays • Dimensions 1065 x 690 x 435 mm

This science storage trolley from Gratnells offers several advantages over standard trolleys, including extra storage, larger castors, enclosed metal trolley frames and stop-safe runners. • 25% extra storage • Larger castors for improved stability • Enclosed metal framing, to reduce cleaning needs and boost security • Improved ergonomic design • Versatile storage, with a wide range of modern colour options • New stop safe runners • Assembly Required • 8 light grey deep trays • Dimensions 1065 x 690 x 435 mm

This science storage trolley from Gratnells offers several advantages over standard trolleys, including extra storage, larger castors, enclosed metal trolley frames and stop-safe runners. • 25% extra storage • Larger castors for improved stability • Enclosed metal framing, to reduce cleaning needs and boost security • Improved ergonomic design • Versatile storage, with a wide range of modern colour options • New stop safe runners • Assembly Required • 8 translucent deep trays • Dimensions 1065 x 690 x 435 mm

This science storage trolley from Gratnells offers several advantages over standard trolleys, including extra storage, larger castors, enclosed metal trolley frames and stop-safe runners. • 25% extra storage • Larger castors for improved stability • Enclosed metal framing, to reduce cleaning needs and boost security • Improved ergonomic design • Versatile storage, with a wide range of modern colour options • New stop safe runners • Assembly Required • 8 lime jolly deep trays • Dimensions 1065 x 690 x 435 mm

This science storage trolley from Gratnells offers several advantages over standard trolleys, including extra storage, larger castors, enclosed metal trolley frames and stop-safe runners. • 25% extra storage • Larger castors for improved stability • Enclosed metal framing, to reduce cleaning needs and boost security • Improved ergonomic design • Versatile storage, with a wide range of modern colour options • New stop safe runners • Assembly Required • 8 shallow and 4 deep tropical orange trays • Dimensions 1065 x 690 x 435 mm

This science storage trolley from Gratnells offers several advantages over standard trolleys, including extra storage, larger castors, enclosed metal trolley frames and stop-safe runners. • 25% extra storage • Larger castors for improved stability • Enclosed metal framing, to reduce cleaning needs and boost security • Improved ergonomic design • Versatile storage, with a wide range of modern colour options • New stop safe runners • Assembly Required • 8 shallow and 4 deep sunshine yellow trays • Dimensions 1065 x 690 x 435 mm

This science storage trolley from Gratnells offers several advantages over standard trolleys, including extra storage, larger castors, enclosed metal trolley frames and stop-safe runners. • 25% extra storage • Larger castors for improved stability • Enclosed metal framing, to reduce cleaning needs and boost security • Improved ergonomic design • Versatile storage, with a wide range of modern colour options • New stop safe runners • Assembly Required • 8 shallow and 4 deep plum purple trays • Dimensions 1065 x 690 x 435 mm

This science storage trolley from Gratnells offers several advantages over standard trolleys, including extra storage, larger castors, enclosed metal trolley frames and stop-safe runners. • 25% extra storage • Larger castors for improved stability • Enclosed metal framing, to reduce cleaning needs and boost security • Improved ergonomic design • Versatile storage, with a wide range of modern colour options • New stop safe runners • Assembly Required • 8 shallow and 4 deep royal blue trays • Dimensions 1065 x 690 x 435 mm

This science storage trolley from Gratnells offers several advantages over standard trolleys, including extra storage, larger castors, enclosed metal trolley frames and stop-safe runners. • 25% extra storage • Larger castors for improved stability • Enclosed metal framing, to reduce cleaning needs and boost security • Improved ergonomic design • Versatile storage, with a wide range of modern colour options • New stop safe runners • Assembly Required • 8 shallow and 4 deep flame red trays • Dimensions 1065 x 690 x 435 mm