Sprint Systems of Photography Block Stop Bath for Black & White Film and Paper

Sprint Systems of Photography Block Stop Bath for Black & White Film and Paper - 20 Liters

Sprint Systems of Photography Block Stop Bath for Black & White Film and Paper - 20 Liters

B&H # SPBS20L MFR # SB020-R
Sprint Systems of Photography Block Stop Bath for Black & White Film and Paper

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Sprint Systems of Photography SB020-R overview

  • 1Description

Sprint Block Stop Bath is a buffered, vanilla scented stop, which Safely and effectively stops development and adjusts the ph of b&w films and prints without unpleasant side-effects.

An indicator color signals exhaustion in b&w printing solutions. This stop dilutes in a 1-9 ratio.

Using Block: In conventional stop baths, the acid ingredient which stops development is hazardous and unpleasant to use, and can damage prints.

Acid can break down print sizing which normally protects fibers from fixer thiosulfate contamination, a major cause of deterioration.

Plain water stop baths eliminate the side-effects of acid, but do not stop development as effectively, and can cause stains and emulsion swelling and reticulation.

Block is an acid solution, but the acids are buffered to minimize the side-effects. Buffering protects print fibers for greater permanence, reduces emulsion swelling, staining, reticulation and eliminates odors. 

Block will also prevent carbonate gas ruptures of films (pinholes) when used as directed.

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  • 1Description

Sprint Systems of Photography SB020-R specs

Chemistry Type Stop Bath
Powder/Liquid Liquid
Liquid Volume 1 x 5.3  gal / 20.0  L
Packaging Infotazybdratadzzxaeavdeuvbaubswubtx
Package Weight 47.1 lb
Box Dimensions (LxWxH) 12.0 x 12.0 x 12.0"

Sprint Systems of Photography SB020-R reviews

Block Stop Bath for Black & White Film and Paper is rated 5.0 out of 5 by 2.
Rated 5 out of 5 by from Better than advertised My high school students completely appreciate the ease of this stop bath as well as the lovely bouquet.
Date published: 2013-10-17
Rated 5 out of 5 by from This stuff is great! Safe and ez to stop development. Smells like vanilla, is not acetic acid, color coded. Safer for students
Date published: 2009-11-12
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