Merck Buffer Solution (citric acid/sodium hydroxide), traceable to SRM from NIST and PTB pH 6.00 (25°C) Certipur®

H₂O 'da 0.050 mg/L Mn
100 ml/paket

Merck Buffer Solution (di-sodium hydrogen phosphate/sodium hydroxide) traceable to SRM from NIST und PTB pH 12.00 (25°C) Certipur®

1000 mg/L NO₂
500 ml/paket

Merck Buffer solution (acetic acid/sodium acetate) traceable to SRM from NIST and PTB pH 4.66 (20°C) Certipur®

Merck Buffer solution (Potassium tetraoxalate) traceable to SRM from NIST and PTB pH 1.68 (25°C) Certipur®

Fotometreler için Kontrol Solüsyonları(445/446 nm, 520/525 nm, ve 690 nm) Spectroquant®
1 adet/paket

H₂O 'da 4.00 mg/L PO₄-P (toplam)
100 ml/paket

H₂O 'da 0.200 mg/L F 
100 ml/paket

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

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

Merck Water standard oil Certified Reference Material for Karl Fischer Titration (oil matrix 15- 30 ppm H2O) Aquastar®

0.5 mol/l 1000 mg/L Fe
100 ml/paket