How to replenishe black & white chemistry

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Revision as of 10:08, 2 October 2025 by Nan (talk | contribs) (Created page with "Developers and fix need to be replenished after each use. Replenishment rates are calculated by the quantity of film processed. For reference: Small tank can fit 8-10 meters of film: you need to replenish 125ml of developer and 60ml of fix. Medium tank can fit 15 meters of film: you need to replenish 250ml of developer and 125ml of fix. Large tank can fit 30 meters of film: you need to replenish 500ml of developer and 250ml of fix. For each meter of film: you need to...")
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Developers and fix need to be replenished after each use. Replenishment rates are calculated by the quantity of film processed.

For reference:

Small tank can fit 8-10 meters of film: you need to replenish 125ml of developer and 60ml of fix. Medium tank can fit 15 meters of film: you need to replenish 250ml of developer and 125ml of fix. Large tank can fit 30 meters of film: you need to replenish 500ml of developer and 250ml of fix.

For each meter of film: you need to replenish 16ml of developer and 8ml of fix.

Steps for replenishing: 1. Take the replenisher developer/fix from the fridge. 2. Pour the required amount of replenisher developer/fix into a 2 litres’ measuring cup. 3. Pour the used developer/fix into the 2 litres’ measuring cup until it completes exactly 2 litres. 4. Put the leftover of developer/fix into the respective recycle chemistry container. 5. Label the replenishment date on the developer/fix bottles. 6. Make sure you fill in this form :)

Note: if you don’t feel comfortable replenishing chemistry by yourself, please come to the lab when Esther is available.

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