Acids for Laboratories & Education in Namibia

Dilute stock, almost always: bench-strength solutions cover the syllabus without the storage class, the fuming cupboard requirements, or the dilution step where accidents live. We supply teaching dilutions ready to use; the demonstration-strength concentrate, where genuinely needed, comes in the minimum viable bottle with storage instructions attached.

Known impurity ceilings: a titration against technical-grade acid inherits whatever metals and residues the batch carried, and your results inherit the scatter. CP grades hold the blank steady — which is the entire point of quantitative work. If your method specifies AR, say so and we source it; but CP is the honest workhorse for most Namibian bench work.

Acid into water, slowly, stirring, in borosilicate or PP — never the reverse, and never in a hurry, because the exotherm on sulphuric especially is violent. Goggles and gauntlets on, neutralising bicarb within reach, and label the product immediately with concentration and date. One person dilutes; nobody dilutes tired.

Neutralise to near-pH-7 with bicarb or soda ash (ours, cheaply) before disposal per municipal rules, keeping metals-bearing waste separate for proper handling — dilution alone is not disposal. For schools, the sane policy is generating less: dilute stocks, micro-scale practicals, and a labelled neutralising station beside the sink.