Can the Chloride QuanTab® test strips be used in soil?

Document ID

Document ID TE6869

Published Date

Published Date 09/20/2018
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Question
Can the Chloride QuanTab® test strips be used in soil?
Summary
Chloride QuanTab® test strips in soil
Answer
In order to use the Chloride QuanTab® Test Strips, 30-600 mg/L (Product # 2744940) and the Chloride QuanTab® Test Strips, 300-6000 mg/L (Product # 2751340) to test soil, use the following instructions:

1. Add 90 mL of hot water (RO/DI) to 10 g of the finely ground sample in a 200 mL beaker.
2. Stir vigorously for 30 seconds, wait one minute, stir again for 30 seconds.
3. Place filter paper, folded in a cone-shaped cup, point first into the beaker.*
4. Place the lower end of the Quantab® into the filtrate (the solution which has seeped through the filter paper) being sure not to submerge the titrator more than 1.0 inch.
5. 30 seconds after the moisture sensitive signal string at the top of the titrator turns dark, record the Quantab® reading to the nearest 0.1 units on the titrator scale at the tip of the yellow-white peak.
6. Convert the Quantab® reading to percent sodium chloride (NaCl) or to ppm chloride (Cl-) using the calibration chart located on the label. Note: Each lot of Quantab® has been individually calibrated by our QA department. Be sure to use the calibration chart on the bottle from which titrators you are using.
7. Multiply the result by the dilution factor 10 to obtain the actual salt concentration in the sample.

*If Quantab® does not form an even shaped peak, the sample may need to be cooled to 20 - 25°C  before testing.

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