Individual Test Kits:

Phosphate (Individual Test Kits)
Phosphate: There are 3 colorimetric test methods. In two, a phosphomolybdate complex is reduced by stannous chloride or ascorbic acid to produce a blue color. In a third, phosphate forms a yellow complex with vanadomolybdate.
Order Code/Model	Test System	Range/Sensitivity	# of Tests (# Reagents)	Shipping Code (Weight/lbs)
3121-01	Ascorbic Acid Octet Comparator with Axial Reader	0, 0.2, 0.4, 0.6, 0.8, 1.0, 1.5, 2.0 ppm PO43–	50 (2)	R1 (1)
5892	TesTabs® Color Chart	0.0, 1.0, 2.0, 4.0 ppm PO43–	100 (1)	NH (1)
7416-01 Not Suitable for Salt or Brackish Waters	Stannous Chloride Octet Comparator with Axial Reader	0.05, 0.1, 0.2, 0.3, 0.4, 0.6, 0.8, 1.0 ppm PO43–	50 (2)	R1 (1)

Shipping Codes & Weight:

Shipping codes and weights for shipping are included in this catalog for your convenience. The shipping code will refer to one of the following in the chart below. Weight will be in pounds and enclosed in ( ).

• NH: Non Hazardous - No Fees
• HF: Hazardous Materials - Air & Ground Fees
• R1: Small Quantity Hazardous Materials - No Fees
• R2 & R3: Hazardous Materials - Air Fees Only

Direct Reading Titrators have a specific range, but may be refilled to test higher concentrations.