I recently acquired a Paterson system 4 tank at a thrift store for a very good price. Now, it didn't come with the twiddle stick, (or it was hiding somewhere in the store haha) is it absolutely needed for agitating? Or can I just do inversions?
As long as I can invert, I'm ok. But honestly, I feel like inversions is a much more thorough compared to using a twiddle stick.No, not needed for agitation. I'm sure I have one I could send you if you absolutely felt like you have to use one. My stable of Patterson tanks numbers somewhere around 8 and none have ever been used with the twisty dealy. Try it without it first. Bill Barber
I used Paterson tanks for 40 years never dawned on me to read instructions , initial agitation . That's a capital idea!The twiddle stick is included because it permits an initial burst of agitation immediately after the addition of chemicals - even before the final lid is on. If you are using processes that involve short development times - like the 3'15" developing time for C41 colour film - there is a good argument for using it.
The instructions do only recommend using it for initial agitation. Inversion agitation is recommended thereafter.
If you "burp" the lid (Google: Tupperware Burp) the air pressure inside the tank is lower than outside the tank and the link stays on like a suction cup.Interesting, I have always used the twiddle stick and never inverted. I always seem to get leaky lids, so I don't invert since I'm not found of chemicals running down my arm.
inversion works well with Patterson tanks.I recently acquired a Paterson system 4 tank at a thrift store for a very good price. Now, it didn't come with the twiddle stick, (or it was hiding somewhere in the store haha) is it absolutely needed for agitating? Or can I just do inversions?
The newer Super System 4 tanks invert well, the big plastic seal lid works fine. The older system 4 tanks can leak, the gray gasket around the lid leaks. If your tank has the small gray lid, buy a swizzle stick, else agitate by inversion.I recently acquired a Paterson system 4 tank at a thrift store for a very good price. Now, it didn't come with the twiddle stick, (or it was hiding somewhere in the store haha) is it absolutely needed for agitating? Or can I just do inversions?
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