"Water"

Supplier: NEUBERT VOLUME GLASSWAERE

Water separator made of Borosilicate glass 3.3.

Supplier: EDVOTEK

Safe drinking water is vitally important to health. Both pathogenic and harmless bacteria can be found in the guts of mammals and birds. Testing water for every possible type of pathogenic bacteria is slow and costly. Thus, water is tested for a characteristic type of gut bacteria - the coliforms - including the familiar E. coli. Presence of coliforms is an indicator for faecal contamination. In this experiment, students test for coliforms in simulated contaminated water using colour and fluorescent reagents. They can use these same reagents to test water samples from the environment. As an extension activity, a Gram Stain test can be performed on the collected samples.

Supplier: Avantor

For use in Liquid Chromatography, Organic and Biosynthesis.

Supplier: Thermo Fisher Scientific

Alluminio trilattato 90-95% contains ≈5% water

Supplier: Thermo Fisher Scientific

The Barnstead™ E-Pure™ is designed to connect directly to the tap water feed, and it can handle all of the laboratory high volume ultrapure water applications with low operating costs. This system is ideal for AA, GS, buffer preps, or as a purified feed water source for analytical instruments or labware washers.

Supplier: MACRON AVANTOR BRAND

Distilled water quality, deionised water.

Supplier: EUROCLONE

1-Butanolo ≥80% saturated solution in water

Supplier: Thermo Fisher Scientific

Ground & Waste Water Pollution Standard Solution 2, Specpure®, Matrice: 2-5% HNO₃ + (CHOH)₂(COOH)₂

Supplier: Avantor

N,N-Dimetilformammide ≥99.8% (by GC, corrected for water content), BakerDRY™ per la sintesi organica, J.T.Baker®

Supplier: Brady

This B-403 material completely dissolves in warm water within 30 seconds, leaving no adhesive residue behind.

Supplier: SciLabware

Water jet pump suitable for most laboratory water pressures with integrated non-return valve that increases safety and a detachable vacuum connection for 6 to 9 mm bore tubing.

Supplier: Thermo Orion

Buffers for calibration giving fast, accurate pH results in high purity and low ionic strength waters. Recommended for samples such as well water, rain water, distilled/deionized water, boiler feed water, and process water.

Supplier: Merck

Milli-Q® EQ 7008/7016 ultrapure and reverse osmosis (RO, Type 3) water systems are designed to produce consistent ultrapure water quality [resistivity 18,2 MΩ.cm at 25 °C; total organic carbon (TOC) ≤5 ppb] direct from a tap water source. Final ultrapure water quality can be adapted to each user’s specific application requirements. Plus, a range of intelligent design features make it effortless to dispense water as needed and where needed in the lab.

Supplier: Thermo Fisher Scientific

Pure and ultra pure water system, Low water level pump protector

Supplier: Thermo Orion

Kit provides fast, accurate pH results in high purity and low ionic strength waters.

Supplier: EDVOTEK

Drinking water is routinely tested for contamination. If a screening tests positive, more sophisticated tests are required. One such test uses PCR in multiplex format. In this experiment, students test for the presence of three separate, classroom-safe organisms in a water sample using a single PCR reaction.