MANUFACTURER
Tie up metal ions (Ca²⁺, Mg²⁺, Fe³⁺) that cause stains, bad keeping, or precipitates.
Disodium edetate EDTA * 2Na Complexon III - 1000g
Lei185.40
Net price: Lei150.73
Disodium edetate EDTA * 2Na Complexon III - 100g
Lei32.44
Net price: Lei26.37
Disodium edetate EDTA * 2Na Complexon III - 10g
Lei18.53
Net price: Lei15.07
Disodium edetate EDTA * 2Na Complexon III - 25 000g = 25kg bag
Lei2,209.30
Net price: Lei1,796.19
Disodium edetate EDTA * 2Na Complexon III - 5000g
Lei811.10
Net price: Lei659.43
Disodium edetate EDTA * 2Na Complexon III - 500g
Lei115.87
Net price: Lei94.21
Sodium Citrate Tribasic - 1000g
Lei69.52
Net price: Lei56.52
Sodium Citrate Tribasic - 100g
Lei20.86
Net price: Lei16.97
Sodium Citrate Tribasic - 10g
Lei5.81
Net price: Lei4.73
Sodium Citrate Tribasic - 25 000g
Lei811.10
Net price: Lei659.43
Sodium Citrate Tribasic - 5000g
Lei231.74
Net price: Lei188.41
Sodium Citrate Tribasic - 500g
Lei41.71
Net price: Lei33.91
Sodium hexametaphosphate ( sodium cyclo-hexaphosphate ) SHMP [ CAS: 68915-31-1 ]
Lei1,034.88
Net price: Lei841.37
Ethylenediamine tetraacetic acid, EDTA, Edetic acid chelating reagent
Lei6.98
Net price: Lei5.67
Sodium hexametaphosphate 68% Loba extra pure op. 100 g
Lei25.52
Net price: Lei20.76
Sodium hexametaphosphate 68% Loba extra pure op. 25 g
Lei15.47
Net price: Lei12.57
Sodium hexametaphosphate 68% Loba extra pure op.500 g
Lei80.20
Net price: Lei65.20
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.