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Old 8th February 2010, 08:01 PM
Richard S Richard S is offline
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Default Water filtration

Does anyone have any views on the necessity of filtering the cold water supply ? I have not done this previously, but as I am in the process of building a darkroom, this would be a good time to do it if there are definite benefits.

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Old 8th February 2010, 08:07 PM
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B&W Neil B&W Neil is offline
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I have never felt the need to filter the main feed into my darkroom/s but I do filter all tap water and solutions used for film development.

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Old 8th February 2010, 08:13 PM
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depends on the quality of your water supply. Have you noticed problems caused by water supply?

Generally my water supply is fine but to be safe I use bought distilled/deionised water for some stock solutions and occasionally use distilled/dionised for final film rinse.

Having said that a filtration system is cheap to buy. The filters aren't so cheap to replace but if you put a bypass system in so you can switch in or out then you can just use it when required. i.e. when you want pure water for stock or rinse purposes.
Bypass also facilitates changing of filters.

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Old 9th February 2010, 07:54 AM
Dave miller Dave miller is offline
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I do as Neil does and filter water through a Brita filter for general chemical mixing, and I also use distilled water for mixing film developer. The sort of set-up described here by percepts would be a good investment.
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Old 9th February 2010, 08:06 AM
Neil Smith Neil Smith is offline
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I also started to filter water for chemical mixing through a Brita Filter, the water in my area is very good but it's better to be safe than sorry.


Neil
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Old 9th February 2010, 09:01 AM
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For general use, film washing, etc., I use a Paterson tap filter to filter out any small particles that may have found their way into the system.

For making up stock solutions and the occasional working solution, I use a Brita or deionised water.
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Old 9th February 2010, 10:26 AM
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I should probably add that I also use distilled/deionized water for mixing up developers.

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Old 9th February 2010, 10:38 AM
Dave miller Dave miller is offline
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Quote:
Originally Posted by B&W Neil View Post
I should probably add that I also use distilled/deionized water for mixing up developers.

Neil.
A friend of mine boils, and then bottles the boiled water believing that the boiling removes, or reduces the free oxygen content in the water. Perhaps those more knowledgeable than I would care to comment about such a practice.
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Old 9th February 2010, 10:51 AM
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I have heard about that method as well but have never used it myself.

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Old 9th February 2010, 12:36 PM
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I take no special messures when mixing up or washing and have never had any trouble. The only thing I do from time time is filter particles from the water supplie with the sort of fliter Trevor has mentioned.

With the new darkroom I may add a drop filter to the water feed.
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