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Buffer concentrates (Sorrensens). Each concentrate makes 5lts of ready to use buffer at specified pH +/-0.1 pH units when diluted with deionised/distilled water.
To provide this product at 25x, the salts in solution are at a very high concentration. At temperatures below 6 degrees C, the salts fall out of solution, stir the product to get the salts back into solution.
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PBS 20 x concentrate pH 7.20 (phosphate buffered) - B100£6.50 - £120.00
pH 7.20 Buffer concentrate - B040L£47.50
TBS 20 x concentrate pH 7.20 (Tris buffered + Tween) - B128£8.75 - £162.50