Chemsolute buffer, pH 4.00 ±0.0, red, twin neck bottle, 1L Back Catalog number: 1134-1L Availability: In the manufacturer's stock Price on request - + Recommended 33594-1L Buffer solution pH 6.865 (25oC) with fungicide, ac Price on request 33650-500ML Buffer solution pH 11.0 (20 oC) boric acid / sodiu Price on request 33648-6X1L Buffer solution pH 9.0 (20oC) borax / hydrochloric Price on request