Chemical

Method

Measurable

Range

Reference

Ammonia/Ammonium

YSI, PHOT.4.AUTO, Indophenol Method

0 - 1.0 mg/L N

YSI 9300 and 9500 Photometers User Manual

Nitrite

YSI, PHOT.24.AUTO (Nitricol)

0 - 0.5 mg/L N

Nitrate

YSI, PHOT.23.AUTO (Nitratest)

0 - 23 mg/L N

Zinc

YSI, PHOT.35.AUTO

0 - 4.0 mg/L

Phosphate

YSI, Phosphate HR, PHOT.29.AUTO

Vanadomolybdate Method

0 - 100 mg/L

Copper

YSI, Coppercol test, PHOT.10.AUTO

0 - 5.0 mg/L

Total Chlorine

YSI, PHOT.7. AUTO, DPD Method

(free chlorine plus combined chlorine including mono chloramine,

di chloramine)

0 - 5.0 mg/L