Details: standard ph buffer solutions traceable to nist, traceable to ptb, ph 4.01 (25 °c, phthalate), ph 7.00 (25 °c, phosphate), ph 9.00(borate), certipur® make- merck, sigma aldrich, bnd standard ph buffer solution ph 9.20 traceable to srm from nist make. certificate from iso/iec 17034. platinum cobalt color standard solution (hazen 500)pt 500 mg/l certipur® traceable to srm from nist make. certificate from iso/iec 17034. with coa and sds. conductivity standard 1.41 micro mohs make iso/iec 17034 with tracesbility to nist. make- merck, sigma aldrich, bnd calcium standard solution traceable to srm from nist ca(no₃)₂ in hno₃ 0.5 mol/l 1000 mg/l ca certipur® certified reference material traceable to srm from nist make. certificate from iso/iec 17034. with coa and sds. hardness, calcium 1000 mg/l calibration standard certified reference material traceable to srm from nist make. certificate from iso/iec 17034. with coa and sds. total dissolved solids (tds) solution traceable to srm for nist 100
Sector: Water supply and Sewerage