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If you are outside North America we must ship the acid reagent, 2M HCl (2N HCl) found in the SC-100A & SC-300 analyzers, the Pro Kit and the SC-100 & SC-300 SO2 Reagent kit in small 1 ounce bottles because of hazardous materials restrictions imposed by international shipping standards. This does not change the function or concentration of the acid solution and you still use 2 mL of the acid solution for each Free SO2 test.


If you are purchasing the large 450 mL volume bottles of the acid solution or the SC-100 & SC-300 SO2 Reagent set (these large replacement bottles which are sold separately from the units themselves), the acid solution will arrive in small 1 ounce bottles as well.


Similarly, we must ship the 100 mL of 1M (1N) NaOH solution in 1 ounce bottles (an optional item for doing Total SO2 analysis – not included with the analyzer or reagent kits) when ordered internationally because of these hazardous material restrictions.


Another alternative shipping method is to contact one of our distributors. If one of our international distributors is close to your location, we can get you in contact with them. Feel free to email,, or call us, if you have any questions regarding international shipping. We are available Monday – Saturday, 9am – 5pm PST: +1 (760) 494-0597


For more information on the Acid reagent check out the link below.