Merck Potassium hydrogen tartrate certified secondary standard reference material for pH measurement; directly traceable to primary SRM from NIST/PTB pH(S) = 3.63 / pH(S) = 3.55 (25°C) Certipur®

Merck Samarium ICP standard traceable to SRM from NIST Sm O in HNO 2-3% 1000 mg/l Sm Certipur®

H₂O 'da 15.0 mg/L NO₃-N
100 ml/paket

0.5 mol/l 1000 mg/L Mn
500 ml/paket

2 mol/l 1000mg/L Pt 
100 ml/paket

0.5 mol/l 1000 mg/L Ag 
500 ml/paket

Merck Buffer solution (citric acid/sodium hydroxide/hydrogen chloride), traceable to SRM from NIST and PTB pH 2.00 (20°C) Certipur®

Merck Buffer Solution (boric acid, sodium hydroxide, potassium chloride) traceable to SRM from NIST and PTB pH 11.00 (25°C) Certipur®

Merck Zinc ICP standard traceable to SRM from NIST Zn(NO ) in HNO 2-3% 10000 mg/l Zn Certipur®

1000 ± 10 mg/L TOC
1 adet/ paket 100 ml

0.2 - 2.0 mg/L
8-16 test/paket

Merck Buffer solution (citric acid/sodium hydroxide) traceable to SRM from NIST and PTB pH 5.00 (20°C) Certipur®

Merck Selenium standard solution traceable to SRM from NIST SeO in HNO 0.5 mol/l 1000 mg/l Se Certipur®