Russian standards PDF
Goods of household chemistry. Method for determination of non-ionic surface-active agent
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Urea for industrial use. Determination of colourity of formaldehyde solution in Hasen's units (platinum-cobalt scale)
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Urea for industrial use. Determination of alkalinity. Titrimetric method
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Urea for industrial use. Potentiometric method of buffer capacity determination
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Urea for industrial use. Potentiometric method for determination of pH variation in presence of formaldehyde
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Bees wax. Method of unsaponuficable matters determination
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