K-1645-6
Boiler/Cooling Systems, Alkalinity/Chloride/Hardness/Sulfite
- UPC Barcode:
- 840036011386
$161.57
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 = 10 ppm total hardness as CaCO₃ | NA | 9198B |
| Sulfite (Sodium) | Drop test | Iodometric | 1 drop = 10 ppm Na₂SO₃ | NA | 9198W |
| Alkalinity, P/M & P/T | Drop test | Phenolphthalein/methyl orange/blended indicator | 1 drop = 10 ppm P/M or P/T alkalinity as CaCO₃ | NA | 9198G |
| Chloride | Drop test | Argentometric | 1 drop = 10 ppm Clˉ | NA | 9198O |
Potential Interferences
| Test Parameter | Description |
|---|---|
| Orthophosphate at concentrations greater than 25 ppm will precipitate as silver phosphate to cause positive interference. This can be prevented by diluting orthophosphate concentrations below 25 ppm with DI water. Bromide, iodide, and cyanide at all levels titrate as equivalent chloride concentrations. Sulfide, thiosulfate, and sulfite interfere but can be removed by treatment with hydrogen peroxide. Quats may interfere; to prevent add 10 drops of R-0884. | Chloride |
| Erythorbic acid, sulfide and ferrous iron may cause positive interference; to prevent, test for suspected interfering agent, dilute sample with DI water as necessary, and retest. Copper and nitrite may cause negative interference; to prevent, test for suspected interfering agent, dilute sample with DI water as necessary, and retest. Delay between taking sample and testing may cause negative interference; to prevent, perform test immediately after sample is taken. Quats may cause interference by forming a precipitate and causing a yellow endpoint. | Sulfite |
| High halogen level may change indicator reaction from green/red to blue/yellow; to prevent, add thiosulfate prior to testing. Filming amines, quats, and biguanides may interfere and cause the endpoint to look purple; to prevent, add 10 drops of R-0884 prior to testing. | Alkalinity |
| 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 |
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.
Documents
0619
Suggested Items
Accessories
Kit Video K-2005
Warnings
