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MANUFACTURER
Suppress development of unexposed silver halide → less fog, cleaner highlights.
Potassium Bromide ( KBr ) Pure For Analytical Purpose - 1000g
Lei208.57
Net price: Lei169.57
Potassium Bromide ( KBr ) Pure For Analytical Purpose - 100g
Lei34.76
Net price: Lei28.26
Potassium Bromide ( KBr ) Pure For Analytical Purpose - 500g
Lei115.87
Net price: Lei94.21
Benzotriazole 1,2,3-benzotriazole BOH
Lei177.91
Net price: Lei144.64
Loba potassium bromide IR spectroscopy op.100 g
Lei495.44
Net price: Lei402.80
Potassium bromide 98% Loba extra pure, Op. 500 g
Lei141.62
Net price: Lei115.14
Potassium bromide 98% Loba extra pure, per 100 g
Lei44.41
Net price: Lei36.10
Sodium chloride 99,5% Loba AR/ACS Op.500 g
Lei28.40
Net price: Lei23.08
Sodium chloride 99.5% Loba extra pure op.1000g
Lei42.42
Net price: Lei34.49
Sodium chloride 99.5% PureLand AR/ACS Op.250g
Lei13.26
Net price: Lei10.78
SODIUM CHLORIDE solution 10% OP. 1L PureLand
Lei88.59
Net price: Lei72.02
SODIUM CHLORIDE standard solution 0.02 MOL/L OP. 1L PureLand
Lei92.79
Net price: Lei75.44
SODIUM CHLORIDE standard solution 0.05 MOL/L OP. 1L PureLand
Lei99.77
Net price: Lei81.12
SODIUM CHLORIDE standard solution 0.10 MOL/L OP. 1L PureLand
Lei87.80
Net price: Lei71.38
Standard solution SODIUM CHLORIDE 3 MOL/L OP. 1L PureLand
Lei89.48
Net price: Lei72.74
Standard solution SODIUM CHLORIDE 9 MOL/L OP. 1L PureLand
Lei87.80
Net price: Lei71.38
Even in unexposed areas, silver halide can develop a little (“chemical fog”), reducing shadow detail and muddying highlights. Restrainers selectively slow development of unexposed or lightly exposed crystals more than heavily exposed ones. Practically, they clean up highlights, reduce base fog, and improve separation in bright tones.
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Potassium bromide is traditional and mild: it lowers fog without dramatically changing look.
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Benzotriazole / PMT are stronger; they’re used when you need very clean highlights (old film, long dev times, warm conditions) but can reduce speed or make the developer feel “slower.”