Kentmere Stop Bath (500mL)

Kentmere Black and White Stop Bath (Liquid Concentrate, Makes up to 5L)
Intermediate Darkroom Chemical Bath – Rapid Development Arrest for Black and White Prints and Negatives, Minimizes Carryover Contamination into Fixer Solutions, Prolongs Archival Fixer Working Life, Concentrated Liquid Formula, Yields Up to 5 Liters of Working Strength Solution (Fresh Stock / Mint Condition)

Kentmere Black and White Stop Bath is a professional-grade liquid concentrate formulated to immediately arrest the action of alkaline developers during traditional photographic darkroom processing. Designed for darkroom printers, lab technicians, and analog photographers, this essential chemical intermediate halts the development process in seconds, locking in exact print contrast and tonal values before materials move to the fixer stage.

By neutralizing residual alkaline developer carryover on print surfaces and tank reels, Kentmere Stop Bath prevents chemical contamination from entering the fixing bath. This critical acid-stop action preserves the activity and archival capacity of the fixer, preventing premature chemical exhaustion and ensuring consistent, repeatable fixing times across long darkroom printing sessions. The concentrated liquid formulation mixes easily with water to yield up to 5 liters of active working solution, offering an efficient, clean-working intermediate bath suitable for developing both resin-coated (RC) and fiber-based (FB) photographic papers as well as black-and-white negative roll and sheet films.

KEY FEATURES & PERFORMANCE HIGHLIGHTS

Instant Development Halting: Rapidly neutralizes alkaline developer chemistry to halt development immediately and preserve precise shadow and midtone contrast.

Fixer Life Extension: Drastically reduces developer carryover contamination into fixing baths, preventing premature exhaustion of rapid fixers.

Dual Media Versatility: Suitable for stopping development across all black-and-white resin-coated (RC) and fiber-based (FB) papers, as well as roll and sheet films.

Economical Liquid Concentrate: Concentrated liquid formula dilutes quickly with water to produce up to 5 liters of active working bath.

Clean-Working Darkroom Chemistry: Formulated for manual open trays, processing dishes, and daylight spiral developing tanks with clean, streak-free results.

Easy Liquid Dispensing: Eliminates powder mixing and dust, allowing fast, precise chemical preparation at standard darkroom working temperatures.

TECHNICAL SPECIFICATIONS

Product Type: Black and White Photographic Chemical Stop Bath

Brand: Kentmere (HARMAN technology)

Product Form: Liquid Chemical Concentrate

Processing Methods: Manual Tray Processing, Open Dishes, and Spiral Tank Inversion

Substrate Compatibility: Resin-Coated (RC) and Fiber-Based (FB) Papers, 35mm / 120 Roll Films, and Sheet Films

Working Solution Yield: Yields Up to 5 Liters (5L) of Working Strength Solution

Standard Working Temperature: 20°C (68°F)

Container Type: High-Density Chemical-Resistant Plastic Bottle with Airtight Cap

Chemical Action: Rapid Acid Neutralization of Alkaline Developers

Physical Condition: Mint / Factory Fresh sealed chemical stock

Function: Immediate Arrest of Print and Film Development, Darkroom Tray Processing, Archival Fixer Protection & Chemical Bath Life Optimization