K-1503
Drop Test, Hardness (total), EDTA, 1 drop = 2 or 10 ppm
- UPC Barcode:
- 840036010853
$69.54
Description of Tests
| Analyte | System | Method/Chemistry | Standard/Equivalance or Description | Comparator | Cell |
|---|---|---|---|---|---|
| Hardness, Total | Drop test | EDTA titration (includes inhibitors to prevent metal interference) | 1 drop = 2 or 10 ppm total hardness as CaCO₃ | NA | 9198B |
Potential Interferences
| Test Parameter | Description |
|---|---|
| Metal ions may cause interference; to prevent, add titrant containing EDTA to sample before buffer and indicator, then test as normal making sure to count drops of titrant added initially in total required to reach endpoint. If interference still occurs, dilute sample with DI water as necessary and retest. Quats may cause interference. | Hardness-total |
Shelf Life Concerns
TEST STRIP SHELF LIFE
As with all perishables, test strips are sensitive to environmental influences and will last longer under controlled conditions.
To this end, we recommend:
- Storing test strips at a consistent temperature in the range of 36°–85°F (2°–29°C); storing test strips in a refrigerator can prolong the shelf life, but the bottle must be warmed to room temperature before opening to avoid condensation.
- Keeping them out of prolonged direct sunlight.
- Segregating test strips from containers of treatment chemicals.
- Replacing bottle lids immediately to reduce exposure to air and humidity.
Taylor formulates its test strips to remain effective for two years, the only exception being Salt test strips which last one year. As a general precaution, replace all test strips more than one year old, or at the beginning of a new testing season.
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