Allow me to state a few things about this bleach:
- This bleach has much higher capacity than the BLIX you would have mixed with the same amount of BX1. It will run and run and run. The only thing that will eventually run low is the Bromide, but remember: you started with 100 g/l, so you have ways to go. 40-50 rolls? No problem!
- All the Ferric EDTA that will be reduced to Ferrous EDTA during bleaching will be fully restored by aerial oxygen. This means you have to give your bleach the oxygen it needs. Fill that liter of bleach into a gallon sized milk jug (make sure you label it properly), and shake it occasionally.
- Another peculiarity about BX1 is that it contains a bleach accelerator (IIRC Mercaptotriazole), which has the benefit that it works faster than plain Ammonium Ferric EDTA, but limits the working solution shelf life of your bleach to a few months (still way better than BLIX working solution). Over time it will become milky, and that's when you discard it.
- Since you kept good notes when you dialed in the pH of this bleach you just mixed, there is no need to do the complicated procedure with baking soda every time you mix another batch. Just add the amount of Acetic Acid you added this time and you will be fine.
- You will have to be kind to your fixer, though. It has to clean up the whole silver of three color layers, which is more than what you have in regular B&W films. Unlike your bleach, your fixer (professional color fixer or TF-5) has near infinite working solution shelf life, but you can't (or let's say: shouldn't expect to) reliably process more than twelve rolls of film per liter.
