This kit tests for nitrite using the dropper pipet method. Range/sensitivity is 1 drop = 50 or 100 ppm NaNO2.

 

Safe, easy, and economical! Students can perform up to fifty tests each for nitrogen, phosphorus, and potassium levels using non-hazardous TesTabs®. Each kit includes the necessary apparatus, simple diagrammed instructions, and a laminated color chart.

The NPK Soil Test Kit was specifically designed to meet the needs of the GLOBE Program™ (Global Learning and Observations to Benefit the Environment). This soil test kit is fun to use and easy to ship anywhere! Ideal for upper elementary, middle, and high school students.

 

This kit tests for Phosphate using the Octa-Slide 2 Comparator. Range and sensitivity is 0.5, 1, 2, 3, 4, 6, 8, 10 ppm and 5, 10, 20, 30, 40, 60, 80, 100 ppm PO43-.

 

This kit tests for Sulfite using the drop count method. Range and sensitivity is 1 drop = 5 ppm SO32-.

 

The Model AR-42 has the same test range for pH, Hardness, and Iron as the AR-02, but it also is equipped to test for Sulfide (0.2-20 ppm). Includes 50 tests for pH, Hardness, and Sulfide; 100 tests for Iron.

 

A creepy, crawly, wet investigation of the health of streams, ponds, and other freshwater environments. Following the easy-to-read BUGKIT manual, one to two students learn to collect, observe, sort, and identify aquatic insects as a tool for measuring water quality.

Students can complete the activity at home after collection or spend an afternoon outdoors beside a stream. The BUGKIT includes mesh leaf bags for collection, trays and plastic dishes for sorting, a magnifying lens, BUG GUIDE, and a BUG BOARD identification chart. Ideal for bug-hunters, age 8 and up.

 

This kit tests for Alkalinity using the dropper bottle method. Range/sensitivity is 1 drop = 10, 25, or 50 ppm as CaCO3.

 

This kit tests for Total Hardness in water by using the Dropper Bottle Method. All results are as CaCO3. Range/sensitivity is 1 drop = 10, 25, or 50 ppm CaCO3.

 

This kit tests for Sodium Nitrite using the Direct Reading Titrator method. Range/sensitivity is 0-1000 ppm/20 ppm NaNO2.

 

TesTabs® kit for measuring pH. Ideal for younger students and teachers who would like an alternative to liquid pH indicators. Ideal companion to Soil NPK Kit (Code 3-5880).