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Tie up metal ions (Ca²⁺, Mg²⁺, Fe³⁺) that cause stains, bad keeping, or precipitates.
Disodium edetate EDTA * 2Na Complexon III - 1000g
Availability: Large quantity
Dispatched within: 5 days
Disodium edetate EDTA * 2Na Complexon III - 100g
Availability: Large quantity
Dispatched within: 5 days
Disodium edetate EDTA * 2Na Complexon III - 10g
Availability: Large quantity
Dispatched within: 5 days
Disodium edetate EDTA * 2Na Complexon III - 25 000g = 25kg bag
Availability: Large quantity
Dispatched within: 5 days
Disodium edetate EDTA * 2Na Complexon III - 5000g
Availability: Large quantity
Dispatched within: 5 days
Disodium edetate EDTA * 2Na Complexon III - 500g
Availability: Large quantity
Dispatched within: 5 days
Sodium hexametaphosphate ( sodium cyclo-hexaphosphate ) SHMP [ CAS: 68915-31-1 ]
![Sodium hexametaphosphate ( sodium cyclo-hexaphosphate ) SHMP [ CAS: 68915-31-1 ]](/environment/cache/images/productGfx_302_200_200/3a8644b77311aadc6680a44fd58de33d.png?overlay=1)
Availability: Large quantity
Dispatched within: 5 days
Tap water brings metal ions like calcium, magnesium, iron, or copper. These can cause precipitates (developer “scum”), catalyze oxidation, create stains, or reduce activity. Chelators bind these ions, keeping them harmless in solution. This improves reliability, especially with hard water, and prevents gritty deposits on film/paper or in tanks.
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EDTA salts, hexametaphosphate, and citrates are typical.
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In practice, they’re a “hidden stability upgrade” — you notice them most when they’re missing.