This Alkalinity Test Kits uses a Direct Reading Titrator with standard acid to the phenolphthalein (P) and/or total (T) alkalinity endpoint. Range and sensitivity is 0-200 ppm as CaCO₃ in 4 ppm increments.

This kit tests for Carbon Dioxide where a standard alkali is used to titrate samples to the phenolphthalein endpoint. Range/sensitivity is 0-50 ppm/1.0 ppm CO_2.

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).

• Simple diagrammed instructions
• Laminated color chart
• 50 tests for pH
• Wide Range 4-11 in 1.0 pH units
• Distilled or deionized water recommended

Determine turbidity or degree of visibility in natural waters with this weighted 20 cm diameter disk.

• braided line
• marked every half-meter up to 20 meters

This kit tests for Tannin/Lignin using the Octa-Slide 2 Comparator. Range and sensitivity is 1, 2, 3, 4, 5, 6, 8, 10 ppm Tannin or lignin like substances.

A precision, NON-MERCURY thermometer, furnished in a protective plastic jacket with a window opening. Engraved graduations on white tubing increase the readability over the full range of -5° to 45°C in 0.5° increments.

Includes 2 Octa-Slide color bars with 8 translucent color standards for Chlorine and pH. A 50-page reference manual for entry level lifeguards and service personnel is included with information on water balance, sanitizers, dosage charts and testing. The POOL MGR. series also includes diagrammed instructions and saturation index calculator in a tough, blow-molded carrying case.

This Aluminum test kit measures aluminum in water using the Octa-Slide 2 Comparator. A pink to red color will form when aluminum reacts with Eriochrome Cyanine R, at pH 6. Range and sensitivity is 0-0.5 ppm Al³⁺.