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 1 Low Range Phosphate 2L P/N: 6776002 $183.00 Waltron Phosphate Calibration Standard, 1PPM, 1L P/N:W1234-055 $194.44 Thermo Scientific Orion 2295 Phosphate Analyzer P/N: 229500 $15,832.00 Hach Phosphate Standard Solution, 1 mg/L as PO4 (NIST), 500 mL P/N: 256949 $53.00 Waltron Molybdo-Vanadate Reagent, 2L P/N: W1234-709 $235.00