Shop › Waltron Phosphate Calibration Standard, 2ppm, 2L P/N: W1234-106 Image 1 of 1 Waltron Phosphate Calibration Standard, 2ppm, 2L P/N: W1234-106 $44.00 Add To Cart Added! Product Number: W1234-106Calibration solution for Waltron 3042 and 3142 Phosphate Analyzers, low range. Product Number: W1234-106Calibration solution for Waltron 3042 and 3142 Phosphate Analyzers, low range. You Might Also Like Hach 5500sc Standard 2 Low Range Phosphate 2L P/N: 6775602 $183.00 Hach Molybdovanadate Reagent, 100 mL MDB P/N: 2076032 $36.00 Waltron Molybdo-Vanadate Reagent, 2L P/N: W1234-709 $235.00 Mettler Analyzer 2850Si/PO4 P/N: 30571940, 30571941, 30571942 from $24,968.75 Hach Sequencer Line Installation Kit for 5500sc Silica/Phosphate Analyzers P/N: 6783500 $703.00