Merck 硝酸鹽測試組 (Nitrate Test)

Merck 氫氧化鈉 溶液 (Sodium hydroxide solution)

Merck 餘氯測試組(HACH用粉劑)，適用於非默克光度計，10ml樣本 (Chlorine Powder Packs for photometers of other manufacturers for 10-ml samples)

Merck 游離脂肪酸 (Free Fatty Acids)

Merck 緩衝液 (Buffer solution)

Merck 緩衝液 (Buffer solution)

Merck 丙酮 (Acetone)

NG商品

Merck 異丙醇 (2-Propanol)

Merck 可溶性澱粉 (Starch)

Merck 氯化鈉 (Sodium chloride)

Merck 酸鹼試紙 pH 0 - 14 (pH-indicator strips pH 0 - 14 Universal indicator)

Merck 磷酸氫二鈉 (di-Sodium hydrogen phosphate)

Merck 氫氧化鈉 (Sodium hydroxide)

Merck Millipore Corporation 粉末介質（液體硫代乙醇醚營養湯）和其他

Merck 硫代硫酸鈉 (Sodium thiosulfate pentahydrate)

Merck 檸檬酸 (Citric acid monohydrate)

Merck 氯化鉀 (Potassium chloride)

Merck 硼酸 (Boric acid)

Merck 檸檬酸鈉 (tri-Sodium citrate dihydrate)