Includes nine different tests to determine the air and water quality of samples you collect from your community Investigate water quality by testing for dissolved oxygen levels water hardness pH and phosphate and chloride content Test for particulate and chemical pollutants in the air measure smoke density and learn how excess carbon dioxide in air can affect the environment There are enough materials for a class of 30 working in groups
All merchants
- Hughes
- Hideaway Beds
- OLIGHT
- Scentsational
- Vevor
- Expert Electrical
- Philips Personal Health
- Known Nutrition
- Biohackbalance
- Home Art Haven
- DAME
- PRC Direct
- Little Women Lingerie
- Wedgwood
- VonHaus
- Tredz Limited
- Terry's Fabrics
- Sacla
- Mustard.Shop
- Harts of Stur
- Cole & Mason
- Piercing Mania
- MBT
- Royal Doulton
- Zooplus
- The White Smiles
- Freshlick
- Slate House
- SodaStream
- Wrappz