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Lab Reagents

Volumetric Solutions & Titrants

Ready-to-use standardised acids, bases, oxidants, EDTA and precipitation titrants in normal and molar strengths for volumetric analysis.
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Preparing and standardising a titrant takes time that many QC laboratories would rather spend on samples. This sub-category offers volumetric solutions made up to a stated strength and checked against a primary standard. The range covers acid-base titrants such as Hydrochloric acid N/10, complexometric solutions like EDTA N/50, redox reagents including Ceric sulphate (N/10) and Iodine 0.01N, and precipitation titrants such as Ammonium thiocyanate 0.1M.

Buyers should match three things to their method. First, the concentration and whether it is stated as normality or molarity. Second, the stated factor tolerance on the label. Third, the container, since iodine and permanganate solutions need protection from light. Our COA gives the actual factor found for the lot and the standard used to determine it.

Solutions are filled in HDPE or amber glass bottles, typically 500 mL to 5 L, with larger packs for high-volume users. Standardised strengths drift once a bottle is open, so order quantities that you can use within the in-use period your SOP sets.

Volumetric Solutions & Titrants: questions buyers ask

Do I still need to standardise a purchased volumetric solution?
Many pharmacopoeial and in-house SOPs require the analyst to verify the factor before use and at set intervals, even for commercial solutions. The supplied factor gives a reliable starting point and confirms the solution was made correctly. Checking it on receipt and after opening protects your results against drift from evaporation or air exposure.
What is the difference between normality and molarity on the label?
Molarity counts moles of solute per litre. Normality counts reactive equivalents per litre, which depends on the reaction. For hydrochloric acid they are equal, but 0.05 M sulphuric acid is 0.1 N in acid-base work. Check which convention your method uses so that calculations and the purchased strength match.
Can you prepare a titrant at a non-standard strength?
Custom strengths can usually be prepared for regular users, such as a specific EDTA molarity or a sodium hydroxide strength for a particular assay. Tell us the reagent, concentration, tolerance and pack size. We will confirm feasibility and lead time, and the COA will show the factor measured for your batch.

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