Timstar - Science

A simple stethoscope.

For testing inhaled and exhaled air. Consisting of two test tubes 150 24 mm, two lengths of glass tubing, connected by PVC tubing with plastic T- piece.

For investigating tidal volumes, respiratory rate, pulmonary ventilation, reserve volumes and vital capacity. Oxygen consumption can also be measured which is useful in metabolic rate studies. A simple lever control enables the subject to be connected either to the atmosphere or to the float for recording. A container for soda lime crystals is fitted which absorbs the CO2. The spirometer is designed to offer minimal resistance to airflow. This provides the user with greater comfort and ensures accurate results. The float is constructed from lightweight plastic and is calibrated in 0.5 litre steps with maximum capacity of 7 litres. A pen arm allows attachment of a fibre tipped pen for recording results or for attachment to a position sensor for datalogging. Two flexible corrugated breathing hoses 0.8 m long are provided. Supplied with two mouth pieces and noseclip. Complete with full instructions.

Pack of 100 spare mouthpieces for the Clifton Spirometer.

Disposable breathing filter for the Clifton Spirometer.

Translucent, natural colour sheet. Dimensions (L x W x D): 1 m x 1 m x 0.25 mm.

Kit containing all the necessary parts to make a lung model demonstration. Includes Bell jar, single hole bung, 'Y' shape adapter to fit in to bung, balloons, cable ties to hold balloons on to adapter, latex rubber sheet to attach to bottom of bell jar using rubber band (or string). By pulling down or pushing up the latex sheet, the balloons can be made to inflate or deflate, simulating the effect of the diaphragm on the lungs.

Disclosing Tablets help to identify plaque (a mixture of acid producing bacteria and sugars) on teeth by dyeing the plaque bright colour. This indicates the areas that need to be cleaned more thoroughly. The tablets are chewed then spread around the teeth using the tongue.

Durable hinged model with realistic shapes and details of a full set of adult teeth. Size 100 x 90 x 70 mm.

The food calorimeter offers superior method of measuring the energy in foodstuff, compared to burning it under boiling tube of water. The enclosed vessel and copper tube ensure that more of the food's energy is used to heat up the water, and less heat is lost to the environment, increasing the accuracy of the experiment. The unit comprises glass jacket with bell jar inside. spiral copper tube draws air through the bell jar, in which food is burning, transferring more of the heat to the water. The lid has holes for thermometer and stirrer. The base unit (BI180105) has clips to hold the calorimeter unit securely, crucible holder, and posts for replaceable ignition coil. The bottom of the base has 4 mm sockets for connecting power supply to the ignition coil. A sample of food is placed in the crucible, the calorimeter unit placed over the top, and filled with water. The power to the ignition coil is turned on, and the food ignited. The temperature of the water is recorded, and the energy released can be calculated from the temperature change. To increase accuracy further, the calorimeter can be calibrated using spirit with known energy density. Also required: a 12 V power supply, 4 mm plug leads, a 0.1 g resolution balance and crucible. Please note that the calorimeter unit and base are sold separately, and both are required. Dimensions Body: (H) 215 mm, (H) including stirrer 275 mm, (D) 100 mm Dimensions Base: (H) 110 mm, (L) Retort Clamp 70 mm, (L) Total 170 mm, (D) 100 mm

For BI180100, Food Calorimeter.The base unit has clips to hold the calorimeter unit securely, crucible holder, and posts for replaceable ignition coil. The bottom of the base has 4 mm sockets for connecting power supply to the ignition coil. A sample of food is placed in the crucible, the calorimeter unit placed over the top, and filled with water. The power to the ignition coil is turned on, and the food ignited. The temperature of the water is recorded, and the energy released can be calculated from the temperature change. To increase accuracy further, the calorimeter can be calibrated using spirit with known energy density. Also required: a 12 V power supply, mm plug leads, 0.1 g resolution balance and crucible. Please note that the calorimeter unit and base are sold separately, and both are required. Dimensions Body: (H) 215 mm, (H) including stirrer 275 mm, (D) 100 mm Dimensions Base: (H) 110 mm, (L) Retort Clamp 70 mm, (L) Total 170 mm, (D) 100 mm

PTC (pheylthiocarbamide) taste test paper test for the genetically controlled ability to taste this substance. Consisting of paper strips impregnated with a harmless quantity of test substance (or untreated in the case of the control strips), subjects will be able to detect (or not) varying tastes or degrees of intensity of taste. 1.Remove a PTC taste test paper from the vial. 2.Stick out your tongue and place the strip on your tongue. 3.There are three basic results: bland, bitter, or vile. The ability to taste these substances is known to be genetically linked (inherited) and depends on the presence of dominant or recessive genes. Having the ability to taste one substance does not necessarily imply that different substance will also be detected. PTC (phenylthiocarbamide) test strips have bitter taste for some individuals, the intensity of which can vary and depends upon a homozygous dominant or heterozygous condition in the individual. PTC Taste Test Paper is perfectly safe to use. Any possible toxicity of PTC would be in grams per kilogram of body weight, which is millions of times greater than anything which would be found in these taste test strips. Phenylthiocarbamide (PTC) is present at only 20 micrograms per strip. At this level, the compound is negligible and harmless.

PTC (pheylthiocarbamide) taste test paper test for the genetically controlled ability to taste this substance. Consisting of paper strips impregnated with a harmless quantity of test substance (or untreated in the case of the control strips), subjects will be able to detect (or not) varying tastes or degrees of intensity of taste. 1.Remove a PTC taste test paper from the vial. 2.Stick out your tongue and place the strip on your tongue. 3.There are three basic results: bland, bitter, or vile. The ability to taste these substances is known to be genetically linked (inherited) and depends on the presence of dominant or recessive genes. Having the ability to taste one substance does not necessarily imply that different substance will also be detected. PTC (phenylthiocarbamide) test strips have bitter taste for some individuals, the intensity of which can vary and depends upon a homozygous dominant or heterozygous condition in the individual. PTC Taste Test Paper is perfectly safe to use. Any possible toxicity of PTC would be in grams per kilogram of body weight, which is millions of times greater than anything which would be found in these taste test strips. Phenylthiocarbamide (PTC) is present at only 20 micrograms per strip. At this level, the compound is negligible and harmless.

Sodium benzoate test paper detects the genetic ability to taste Sodium Benzoate. The taste detected varies from sweet, salty, to bitter, depending upon the individual. Homozygous-dominant and Heterozygous-dominant individuals will detect the molecule. 1.Remove a strip of test paper from the vial. 2.Stick out your tongue and place the strip on your tongue. 3.You may not taste anything, but if you do, there are three basic results: sweet, salty, and bitter.

Thiourea test paper test for the genetic capability to detect Thiourea. For other taste tests, see our PTC and Sodium Benzoate test papers. 1.Remove a Thiourea test paper from the vial. 2.Place the test strip on your tongue and it will either taste bitter or it won’t taste like anything at all.

The Control Paper does not contain any added chemicals, and is simply designed to act as the control in taste test experiments. 1.Remove one strip of Control Paper from the vial. 2.Stick out your tongue and place the strip on your tongue. 3.The strip is tasteless, and thus should not stimulate a reaction.

Designed for use in education. Features include large easy to read LCD, simple one button operation, counts number of steps from to 99999, strong metal belt/clothing clip and reset button that has 2 second press and hold delay to avoid accidental resetting. Complete with SR44 battery.

A good value, quality digital Hand Dynamometer with large LCD. Used for measuring hand grip strength in kilograms. Made of high quality and durable plastic and features an adjustable grip to account for different hand sizes. Can be used to auto capture maximum grip strength or it can be set up to save and store results for up to 19 users. Also rates strength according to age and sex if this has been set up in the instrument prior to testing.

A small compact kit, with a full range of contraceptive samples/placebos. Ideal for any session on contraception. A good resource to use alongside the Contraception Board Game and the Safer Sex Kit. • Condoms 1 female, 3 male and 1 latex free • Plastic model IUD/IUS and mini booklet • Plastic model Implant and picture card • Picture cards showing contraceptive pills (28 day, 21 day, emergency pill) • Contraceptive injection photo card • Diaphragm • Lubricant sachet • Contraceptive patch stickers x 3 • Placebo vaginal ring • Methods of contraception booklet

Condom Demonstrator for Safer Sex Education. Condoms are for demonstration purposes only.

Condoms are for demonstration purposes only.

Reagent strips for qualitative test for glucose in urine. Alternative to Clinistix.

Reagent strips for testing protein in urine. Alternative to Albustix.

High quality reagent test strips used for urinalysis. Supplied in a pack of 50. Albustix test for Protein (p).

Pack of 50 Diastix, clinical test strips.

High quality reagent strips for urinalysis, supplied in a pack of 50. Uristix test for Glucose (g) and Protein (p).

Bacti-Caps provide firm, positive culture tube closure whilst allowing controlled gas interchange. They are an excellent and more practical alternative to wool or foam plugs. Suitable for most standard rimless test tube sizes. Made from chemically resistant plastic, colour coded and autoclavable.

Nichrome, designed to be held in needle holder. (DI05920).

Flexible loops for easier collection and inoculation Volume: 10 µl Length: 200 mm Sterilised by irradiation

Non-Sterile, disposable. NOT individually wrapped. Polystyrene, free from heavy metal.

For the measurement and collection of gas evolved by aquatic plants during photosynthesis. The gas evolved can be measured by the calibrated capillary tube and drawn off for analysis by the plastic syringes. Mounted on plastic panel 190 x 150 mm.

For demonstration of heliotropism and geotropism. Germinating seedlings are pinned to the cork table which is rotated by an electric motor at 4 revolutions per hour. The motor is spindle mounted and may be clamped so that the place of the table can be set at any angle between horizontal and vertical. An acrylic cover is provided for the cork table to shield the seedlings from draughts. The cork disc has 10 cm diameter.

For investigating the uptake of water and transpiration of cut shoot. The apparatus can be submerged in basin of water while the cut stem is mounted. The graduated capillary tube is 100 mm long with a 1 mm bore. Mounted on stand. Dimensions (H x W x D): 140 x 85 x 65 mm.

Consisting of a graduated narrow bore glass tube fitted with a vessel to take a plant shoot at one end and a funnel with glass stopcock mounted vertically. Complete with wooden stand.

Set comprises: Astacus testis v.s., Locust testis v.s., Locust testis squash, Locust embryo squash, Allium root-tip l.s., Lilium anthers t.s. early prophase, Lilium anthers t.s. late prophase, Lilium anthers t.s. metaphase, Lilium anthers t.s. late first division, Lilium anthers t.s. second division.

Spare Cover Glasses for Glass Haemacytometer MI160322). Supplied as a pack of 2.

Cover slips No. 0. Resistance Glass 0.09 to 0.13 mm thick. 18 mm x 18 mm. Supplied in a pack of 100.

Cover slips No. 0. Resistance Glass 0.09 to 0.13 mm thick. 22 mm x 22 mm. Supplied in a pack of 100.

Cover slips No. 1. Resistance Glass 0.13 to 0.16 mm thick. 18 mm x 18 mm. Supplied in a pack of 100.

Cover slips No. 1. Resistance Glass 0.13 to 0.16 mm thick. 22 mm x 22 mm. Supplied in a pack of 100.

Cover slips No.1½. Resistance Glass 0.16 to 0.19 mm thick. 18 mm x 18 mm. Supplied in a pack of 100.

Cover slips No.1½. Resistance Glass 0.16 to 0.19 mm thick. 20 mm x 20 mm. Supplied in a pack of 100.

Cover slips No.1½. Resistance Glass 0.16 to 0.19 mm thick. 22 mm x 22 mm. Supplied in a pack of 100.

Cover slips No. 2. Resistance Glass 0.19 to 0.25 mm. 18 mm x 18 mm. Supplied in a pack of 100.

Cover slips No. 2. Resistance Glass 0.19 to 0.25 mm. 22 mm x 22 mm. Supplied in a pack of 100.

Stainless steel with spatula ends.

Two hinged flaps and numbered positions.

A hand microtome suitable for section cutting. The milled head at the base when revolved records 10 microns per click. Brass top plate 75 mm diameter. Overall length 85 mm. Supplied in hinged wooden case.

Clear polished glass, 6 mm deep cavity with flat glass cover. 40 mm x 40 mm.

Glass microscope slides with single frosted panel to allow marking of the slide. These come with tissue paper separating each slide and have ground edges. Dimensions: 76 mm x 26 mm. 1.0 mm thickness. Supplied in a pack of 50.