Timstar

Straight pattern, fitted with 6.5 mm diameter contact cap at each end. For observing line and band spectra from various noble and diatomic gases. The capillary tube measures 80 mm length x 6 mm diameter. Total length approx 220 mm.

Straight pattern, fitted with 6.5 mm diameter contact cap at each end. For observing line and band spectra from various noble and diatomic gases. The capillary tube measures 80 mm length 6 mm diameter. Total length approx 220 mm.

Straight pattern, fitted with 6.5 mm diameter contact cap at each end. For observing line and band spectra from various noble and diatomic gases. The capillary tube measures 80 mm length 6 mm diameter. Total length approx 220 mm.

For rapid examination of spectral composition of white light. Consisting of metal tube with draw out focussing and an adjustable slit fitted with achromatic objective glass and element prism.

This direct vision spectroscope incorporates fine slit in conjunction with an efficient blazed grating, which transmit high proportion of energy into the first and second order spectra, giving very bright and sharp spectra. The third order spectra can also be seen, although not as brightly.

Spectroscopy is an interesting visual subject for students. This spectroscope helps teachers to demonstrate simply and clearly. Uses include; •Fraunhoffer lines •Flame test in chemical analysis •Absorption spectra through liquids •Bright line spectra from discharge tube Features; •Large diameter eyepiece aperture facilitates comfortable viewing of the single, large and bright spectrum which is centrally placed in the field of view •High quality optical components ensure that absorption bands show up clearly – even weak bands that are sometimes difficult to detect •The spectrum is generated by a particularly bright transmission diffraction grating of 600 lines/mm •Fixed construction – no need for adjustment •Robust assembly to withstand years of student handling •Benchtop size: 105 mm x 25 mm •Boxed weight: 115 g •Supplied in a protective rigid box

The performance of this ultra-low cost spectroscope is comparable with instruments costing much more. It uses a CD or DVD as a reflective diffraction grating and clearly shows Fraunhofer lines in the spectrum arising from natural light, distinctive emission bands from artificial sources such as sodium lamps and differences between different types of fluorescent lighting tubes. The spectroscope is made from polypropylene and supplied in flat pack form for quick self-assembly. It comes with free CD but can be used with any CD (or DVD for higher resolution).

An economically priced instrument, which is nevertheless capable of much useful quantitative work. The main structural parts, including the collimator and telescope bodies are heavy castings, other metal parts being bright plated. SCALE: 170 mm dia. divided to 360° 1°, independently rotatable with locking screw. spring-loaded vernier scale attached to the telescope mount provides readings to 0.1° (6 minutes of arc). COLLIMATOR: Mounted on a fixed pillar with axis adjustment. Objective lens 150 mm FL, an aperture of 21 mm and is carried in spiral focusing systems. Unilaterally adjustable slit 6 mm long. TELESCOPE: Mounted on moveable pillar with adjustment, locking screw and axis adjustment. Objective lens has 170mm FL, 21mm aperture and is carried in spiral focussing system. RAMSDEN EYEPIECE: With cross wires and locking ring focus adjustment. PRISM TABLE: The table is provided with three leveling screws and is line marked to assist placement of prism. STANDARD ACCESSORIES SUPPLIED: 1 prism clamp for prisms up to 40 mm high, 1 diffraction grating holder, aperture 25 x 25 mm, 1 small screwdriver, 1 tommy bar for axis adjustment and case.

Supplied in pack of 10.

Supplied in pack of 10.

Supplied in pack of 10.

Supplied in pack of 10.

Supplied in pack of 10.

Supplied in pack of 10.

Supplied in pack of 10.

Supplied in pack of 10.

Supplied in pack of 10.

Supplied in pack of 10.

Cobalt chloride free humidity indicator paper does not contain carcinogenic or toxic material. There is a clear colour change from yellow-green to pale to colourless at approximately 2% Humidity indicator paper traditionally contains cobalt chloride which is known for it’s toxic and carcinogenic properties Handling these indicator papers puts end users and those involved with packing them at risk This non-toxic moisture indicator paper disqualifies this risk being safer to use

Cobalt Chloride Test Paper can quickly and economically measure the presence of relative humidity in the atmosphere. The paper is directly exposed to the atmosphere and turns from blue to pink upon contact with relative humidity greater than 2%. These papers are traditionally used in school experiments. Supplied in books of 20 strips.

Johnson Test Papers Universal Indicator Paper pH 1 - 11, pH paper - for use in education. Supplied in books of 20 strips.

Johnson Test Papers Litmus neutral paper, pH paper - for use in education. Supplied in books of 20 strips.

Johnson Test Papers Litmus red paper, pH paper - for use in education. Supplied in books of 20 strips.

Johnson Test Papers Litmus red paper, pH paper - for use in education. Supplied in books of 20 strips.

Johnson Test Papers Litmus blue paper, pH paper. Supplied in books of 20 strips.

Johnson Test Papers Litmus Blue Paper, pH paper. Supplied in books of 20 strips.

0 to 9999, in chrome plated steel case with zero reset control.

Supplied in pack of 10.

Supplied in pack of 10.

Supplied in pack of 10.

Supplied in pack of 10.

Supplied in pack of 10.

Supplied in pack of 10.

Supplied in pack of 10.

Supplied in pack of 10.

Supplied in pack of 10.

Supplied in pack of 10.

Ground glass syringe. Marked with 20 mL major graduations, and 1 mL minor graduations. Suba-Seal Stoppers ST14710 or ST14715 can be used as resealable stoppers. For video demonstration, visit timstar.co/SubaSealSyringe

Sterile, plastic, individually packed and graduated. Luer fitting.

Sterile, plastic, individually packed and graduated. Luer fitting.

Sterile, plastic, individually packed and graduated. Luer fitting.

Luer fitting, interchangeable pistons and barrels.

Luer fitting, interchangeable pistons and barrels.

A plastic tap with male and female Luer connectors.

Sterile, plastic, individually packed and graduated. Luer fitting.

Holder for glass gas syringes.

With turnover flange and serrations to grip the inside of narrow neck containers. Supplied in pack of 10. Can be used as resealable stoppers for Gas Syringe ST14858. For video demonstration, visit timstar.co/SubaSealSyringe

With turnover flange and serrations to grip the inside of narrow neck containers. Supplied in pack of 10. Can be used as resealable stoppers for Gas Syringe ST14858. For video demonstration, visit timstar.co/SubaSealSyringe

Sterile, plastic, individually packed and graduated. Luer fitting.

Sterile, plastic, individually packed and graduated. Luer fitting.

Sterile, plastic, individually packed and graduated. Luer fitting.

Sterile, plastic, individually packed and graduated. Luer fitting.

Sterile, plastic, individually packed and graduated. Luer fitting.

Assorted pack of one-hole stoppers containing the following: each of No's. 7, 8, 9, 10, 11, 13, 15, 17, 19, 21, 23. Two each of No's. 25, 27, 29, 31, 33, and 35.

Assorted pack containing the following: each of No's. 7, 8, 9, 10, 11, 13, 15, 17, 19, 21, 23. Two each of No's. 25, 27, 29, 31, 33, and 35.

Supplied in pack of 10.

Johnson Test Papers Litmus Blue Paper, pH paper- for use in education,and industrial. 1 reel (5m x 7mm).

Johnson Test Papers Universal Indicator Paper pH 1 - 11, pH paper - for use in education. Supplied in books of 20 strips.

Johnson Test Papers Universal Indicator Paper pH 1 - 14, pH paper- for use in education,and industrial. 1 reel (5m x 7mm).

Johnson Test Papers Universal Indicator Paper pH 1 - 11, pH paper- for use in education,and industrial. 1 reel (5m x 7mm).

Johnson Test Papers Universal Indicator Paper pH 1 - 14, pH paper - for use in education. Supplied in books of 20 strips.

Johnson Test Papers Universal Indicator Paper pH 1 - 14, pH paper - for use in education. Supplied in books of 20 strips.

Johnson Test Papers Litmus Red Paper, pH paper- for use in education,and industrial. 1 reel (5m x 7mm).

RS232 for Scout balances.

Alkaline Batteries Bulk Pack Of 40 Aaa

Alkaline Batteries Bulk Pack Aa

Reliable performance, excellent resistance to corrosion and designed to meet all major quality, safety and environmental standards.

Reliable performance, excellent resistance to corrosion and designed to meet all major quality, safety and environmental standards.

Reliable performance, excellent resistance to corrosion and designed to meet all major quality, safety and environmental standards.

Reliable performance, excellent resistance to corrosion and designed to meet all major quality, safety and environmental standards.

Reliable performance, excellent resistance to corrosion and designed to meet all major quality, safety and environmental standards.

This clear polycarbonate gable lid is suitable for use with the 2 and 4 litre triple baths, BA150300, BA150304 and BA150306. •Allows allowing full use of whole width of a water bath with the lowest height of the gable being 45mm above the bath. •Ensures that where condensation accumulates in use there are no drip points which could spoil work in open flasks. •Water evaporation is reduced at elevated temperatures, maintaining water levels in the water bath. •The lid fits into the tank ensuring all condensation runs back into the bath and not down the side onto your bench top. •Reduces energy consumption and running costs for your water bath. •Insulated handle

Simax Reagent Bottle 500Ml Red Cap

Simax Reagent Bottle 1000Ml Red Cap

Simax Reagent Bottle Spare Pouring Ring

Edvocycler Junior

Blood Pressure Monitor

Ideal for keeping safety glasses and lenses clean and dust free. Highly absorbent, non-abrasive lint free tissues.

•Large multi-purpose Universal disinfectant wipes to clean and disinfect. •Clinell Universal Wipes provide a single, universal product for surface disinfection and cleaning of non-invasive medical devices. •Containing a unique, patented antimicrobial formula they can be used as a skin friendly, disinfectant and detergent wipe. •Proven to kill at least 99.999%* of germs including norovirus, coronavirus, flu virus, HIV and MRSA

Crucible, squat 15 mL complete with ringed handle lid.

Crucible, squat 25 mL complete with ringed handle lid.

Crucible, tall, 25 mL complete with ringed handle lid.

A 10-inch Android tablet with 7 integrated measurement sensors. Cobra SMARTlink is a state-of-the-art, high-performance 3-in-1 tablet. It is not only a great measuring and display device for digital science teaching, but also a full featured Android tablet. Due to the brilliant 10.1 inch display combined with the powerful hardware and the 7 internal measuring sensors, it is perfectly equipped for the demands of modern, digital science teaching. Cobra SMARTlink is easy and reliable to use. Features Equipment - Start measuring directly with 7 internal sensors and the pre-installed measuring software measureAPP Performance - A powerful CPU and sufficient RAM ensure that everything always runs smoothly Completeness - Get started right away with more than 100 ready-to-use experiment descriptions for all disciplines (physics, chemistry, biology and natural sciences) in the pre-installed measureAPP Presentation - A brilliant 10.1"" display offers sufficient space for all applications as well as a detailed and pin sharp display Extensibility - More than 40 additional sensors connectable via Bluetooth and USB. Versatility - The Android operating system and the more than 3 million apps in the Google Play Store support you beyond experimenting Endurance - The large battery with 10.000 mAh and quick charge function ensures your use throughout the entire school day Connectivity - 5 integrated high-speed USB ports for lightning-fast measurements and connection of accessories such as cameras, USB sticks or hard drives Equipment and Technical Data Octa-Core (8-core) processor 2.0 GHz, 4 GB RAM (DDR3) Internal memory 64 GB, expandable to 128 GB with microSD card 10.1 inch LCD touch screen (16:10), resolution 1,200 x 1,920 (WUXGA) Front camera 2 MP, main camera 5 MP Built-in loudspeaker, built-in microphone, 3.5 mm headphone jack Bluetooth 5.0, GPS, WiFi standard 802.11 a/b/g/n/ac 1 x USB type C to charge the device and for data communication e.g. via USB stick, PC Battery: 10.000 mAh Weight: 830 g Internal sensors Temperature: 2 x thermocouple type K Measuring range: -200 - 1200°C Resolution: 0,4°C Accuracy: +/- 3% Data rate: 1 kHz Voltage: 1 x voltage connection 4 mm sockets Measuring range: -30V…+30 V Resolution: 20 mV Accuracy: +/- 1% Data rate: 1 kHz Current: 1 x current connection 4 mm sockets Measuring range: -1A - +1A Resolution: 0,5 mA Accuracy: +/- 1% Data rate: 1 kHz Light (built-in sensor) Measuring range: 1-128 kLx Resolution: 1 Lx Accuracy: +/- 4 % Data rate: 10 Hz Humidity (built-in sensor) Measuring range: 0 - 100 % Resolution: 0,1 % Accuracy: +/- 4 % (bei 0-80 %) Data rate: 10 Hz UV (built-in sensor) Measuring range: 0 - 400 W/m² Resolution: 0,1 W/m² Accuracy: +/- 4 % Data rate: 10 Hz Acceleration (on board) 4 x USB 2.0 inputs for Cobra SMARTsense sensors, maximum data rate up to 10 kHz Contents 1x Cobra SMARTlink 1x Charging cable type C with charging adapter 2x Temperature probes type K 2x Banana plugs, stackable, red with 4 mm plug, 50 cm length 1x Banana plug, stackable, blue with 4 mm plug, 50 cm length 1 x Manual

Measure both DC and AC voltages in circuits and plot the curve directly. This sensor makes it easy to explore the basic concepts of electricity. •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 V •Resolution: 0.02 V •Sample rate: 1000 Hz (10000Hz via USB)

The Cobra SMARTsense current sensor can be used to measure the current intensity in circuits and plot it directly. In this way, students develop a deeper understanding of the basic concepts of electricity. 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: +/- 1 A Resolution:0.5 mA Sample rate: 1000 Hz (10000 Hz via USB) Short circuit proof up to 3 A

This Cobra SMARTsense sensor enables real-time temperature measurement with graphical progression which can also continue over a long period of time. The water resistance ensures the longevity of the sensor even in experiments with liquids. Quick and easy connection via Bluetooth and the free measureAPP Range: -40 - 120 °C Resolution: 0.01 °C Sample rate: 10 Hz Water resistant to IP67. Sensor requires a battery (CR2032) which is not included.

This simple to use Cobra SMARTsense light sensor is perfect for taking measurements within the classroom but also for using outdoors, for example, when studying photosynthesis or light levels in woodland and forests. 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: 1 - 128 kLx Resolution: 1 Lx Sample rate: 10 Hz

Measure the movement of objects using the Cobra SMARTsense motion sensor. Students can perform experiments on linear motion and gain a deeper understanding of mechanics. 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: 0.2 - 2 m Resolution: 1 mm Sample rate: 50 Hz

This Cobra SMARTsense Photogate sensor pair allows precise time measurement of dynamic processes, including free fall, pendulum investigations and many more. 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 - ∞ Resolution: 0.01 ms Sample rate: 1000 Hz Supplied as a pair

Stainless steel support rods for DA220060 SMARTsense Photogate sensor. 300 mm with external thread.

With this Cobra SMARTsense pH sensor, the pH value of solutions can be accurately measured, and the real-time curve displayed. Ideally suited for practicals across chemistry and biology as well as environmental science. Quick and easy connection via Bluetooth and the free measureAPP Range: 0 – 14 Resolution: 0.01 Sample rate: 100 Hz Includes pH electrode. Water resistant to IP67. Sensor requires a battery (CR2032) which is not included.

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