Product: ORP Calibration Buffer Powder — 256 mV Redox Potential Analyzer/Test Pen Calibration Key benefits Portable and costeffective: powder form eliminates bulky, heavy liquids and reduces costs and breakage risk. Ideal for field work and remote locations. Readytouse 256 mV calibration: each pack produces a stable 256 mV ORP buffer solution when mixed with water, enabling reliable redox calibration. Easy preparation: simply add 50 ml of distilled or purified water to one pack and dissolve. Stable and spacesaving storage: dry powder is shelfstable, compact to carry, and requires no special or storage conditions for liquids. Practical, userfocused design: singleuse packs are convenient, attractive, and easy to label or organize. Function and compatibility Purpose: calibrates ORP/redox meters, test pens, probes and analyzers to a 256 mV reference point. Compatibility: suitable for most handheld ORP testers, penstyle meters, benchtop analyzers and probe systems that accept singlepoint ORP calibration. Performance: provides a consistent, reproducible 256 mV buffer when prepared as directed for accurate instrument adjustment. How to use Add 50 ml of distilled or purified water to one pack of powder. Stir or shake until fully dissolved to produce the 256 mV calibration solution. Follow your instrument's calibration procedure using the freshly prepared buffer. Practical applications Field calibration for aquaculture and fisheries: bring compact packs to ponds, hatcheries or remote sites to verify ORP meters onsite without transporting liquids. Water treatment and wastewater facilities: quick, onthespot recalibration of handheld ORP meters during routine checks and maintenance. Environmental monitoring and lab use: maintain accurate redox measurements for sampling campaigns or bench calibration where space and transport are limited. Product form and packaging Singlepack powder format — each pack is formulated to make one 50 ml 256 mV buffer solution. Designed for portability and practical handling; reduces risk of spills and hazards associated with liquids. Notes and precautions Use distilled or properly purified water for preparation to ensure accurate buffer value. Prepare buffer immediately before calibration for results, or follow any recommended storage guidance on the pack. Follow your instrument manufacturer's calibration instructions when using this buffer. This product provides a convenient, reliable way to prepare a 256 mV ORP calibration solution in a compact, easytotransport form suitable for field and laboratory use.