|Range||MDL||Method||Kit Catalog No.||Refill Catalog No.|
|0-4 & 0-80 ppm||0.125 ppm||Hydroxybenzyl Alcohol (HBA)||K-1420||R-1402|
|0-125 & 0-2500 ppm||8 ppm||Hydroxybenzyl Alcohol (HBA)||K-1420D||R-1402D|
|0-500 & 0-10,000 ppm||30 ppm||Hydroxybenzyl Alcohol (HBA)||K-1420B||R-1402B|
|0-1 & 1-10 ppm||0.05 ppm||Direct Nesslerization||K-1510*||R-1501*|
|0-30 & 30-300 ppm||5 ppm||Direct Nesslerization||K-1510D*||R-1501D*|
|0-60 & 60-600 ppm||10 ppm||Direct Nesslerization||K-1510A*||R-1501A*|
|0-120 & 120-1200 ppm||20 ppm||Direct Nesslerization||K-1510B*||R-1501B*|
|0-1000 & 1000-10,000 ppm||100 ppm||Direct Nesslerization||K-1510C*||R-1501C*|
|Range||Method||Kit Catalog No.|
|0-3.00 & 0-60.0 ppm||Hydroxybenzyl Alcohol (HBA)||K-1413|
|0-7.00 ppm||Direct Nesslerization||K-1503*|
|0-14.0 ppm||Direct Nesslerization||K-1523*|
Low-level ammonia nitrogen may be naturally present in water as a result of the biological decay of plant and animal matter. Higher concentrations in surface waters can indicate contamination from waste treatment facilities, raw sewage, industrial effluents (particularly from petroleum refineries), or fertilizer runoff. Excessive ammonia concentrations are toxic to aquatic life.
Shelf-life: although the Nessler reagent is stable, its high alkali content attacks the glass ampoule. The resulting precipitate interferes with color comparison. We recommend stocking quantities of CHEMets® and VACUettes® ampoules that will be used within five months. A two-month supply of Vacu-vials ampoules is suggested. Refrigeration will dramatically extend the shelf-life of these products.
*Contains mercury. Dispose according to local, state or federal laws.
The Hydroxybenzyl Alcohol Method offers sensitivity similar to the Nesslerization Method and there is no generation of mercury-containing waste.