Product #1 (Taq DNA Polymerase) consists of two tubes packed in a retail box as a set. One tube contains Taq DNA polymerase mixed with a storage buffer composed of glycerol, water, NaCl, sodium phosphate dibasic, sodium phosphate monobasic, EDTA (CAS # 6381-92-6), and DTT (CAS # 3483-12-3). The other tube contains a 10X reaction buffer composed of water, KCL, Tris HCl (CAS# 1185-53-1), MgCl2, and Tween 20 (CAS # 9005-64-5).
Product #4 (Pfu DNA Polymerase) consists of two tubes packaged together for retail sale as a set. One tube contains Pfu DNA polymerase mixed with a storage buffer whose composition consists of glycerol, water, KCl, Tris HCl, Tween 20, EDTA, and DTT. The other tube contains a 10X reaction buffer consisting of water, Tris HC1, (NH4)2SO4, Triton X-100 (CAS # 9002-93-1), BSA (CAS # 9048-46-8), and MgSO4.
Product #5 (Pfu Plus DNA Polymerase) also consists of two tubes packaged together for retail sale as a set. One tube contains Pfu Plus DNA polymerase mixed with a storage buffer composed of glycerol, water, NaCl, Tris HCL, EDTA, DTT, and BSA. The other contains a 5X reaction buffer comprised of glycerol, water, NaCl, Tris HC1, EDTA, BSA, and DTT.
[1] Please importantly note that only the relevant portion of the related is displayed above. You may refer to the said customs ruling for the entire ruling explanation.
[1]. https://rulings.cbp.gov/ruling/N313622
The tariff classification of DNA Polymerase Enzymes. TAQ DNA Polymerase is an enzyme used in PCR reaction in molecular biology experiments. TAQ DNA Polymerase is a thermostable DNA polymerase named after the thermophilic bacterium Thermus aquaticus and is frequently used in polymerase chain reaction (PCR). It is for pharmaceutical and biomedical research use, but it is not for clinical diagnostic procedure. Hi FiFa Tth DNA Polymerase: Hi-FiFa Tth DNA Polymerase is a proofreading DNA polymerase isolated from Pyrococcus furiosus. It is for pharmaceutical and biomedical research use, but it is not for clinic diagnostic procedure. Ultra Tth DNA Polymerase: Ultra Tth DNA Polymerase is a thermostable enzyme derived from Thermus thermophilus. The enzyme possesses an intrinsic reverse transcriptase activity in the presence of Mn2+ ions. It is for pharmaceutical and biomedical research use, but it is not for clinical diagnostic procedure.
[1] Please importantly note that only the relevant portion of the related is displayed above. You may refer to the said customs ruling for the entire ruling explanation.
[1]. https://rulings.cbp.gov/ruling/N164299