ripblade
Super Member
I heated a small amount of the water in a microwave and dissolved the EDTA pellets in that. It was still a long effort, but I got there eventually.The EDTA won't seem to dissolve no matter how much I shake and shake.
I heated a small amount of the water in a microwave and dissolved the EDTA pellets in that. It was still a long effort, but I got there eventually.The EDTA won't seem to dissolve no matter how much I shake and shake.
I'm trying to make some concentrate using the following quantities:
400mL 91% Isopropyl Alcohol
14mL Hepastate 256
18mL Triton X-100
7g of Tetrasodium EDTA
The EDTA won't seem to dissolve no matter how much I shake and shake.
I was planning to add 45mL of this concentrate to 700mL of RO/DI water to make batches of general purpose cleaner for my vacuum style RCM.
Anyone else have this problem or have any ideas how to deal with it? Do I need to add some RO/DI to my concentrate to dissolve the EDTA and redo my math?
Some foaming is to be expected. You are essentially using a light detergent solution. In my opinion, scrubbing the record is probably not necessary, unless there is some crud or liquid dried on the surface of the record, maybe. The main thing is to move the solution around so that it gets into the record grooves and soaks/ loosens the crud for vacuuming up. I vacuum the cleaning solution for two or three revolutions of the record and I do the same for the distilled water rinse. This works well for me.I made a bottle of the solution that has the following attributes: Distilled Water 88.62%, 91% IPA 11.21%, and Triton X-114 0.17%. I have a wand, made by hi*ball, to vacuum the solution off of the record. I use a record cleaning brush that I bought a long time ago to scrub the records.
A couple of questions:
1. When scrubbing the records I get a little foaming. Would that be considered normal?
2. After vacuuming the cleaning solution off I do a rinse. The rinse consists of straight distilled water that I squeegee over the surface of the record. After wiping the wand off I vacuum that DW off. Is this a sufficient rinse?
Any input would be appreciated.
I'm trying to make some concentrate using the following quantities:
400mL 91% Isopropyl Alcohol
14mL Hepastate 256
18mL Triton X-100
7g of Tetrasodium EDTA
The EDTA won't seem to dissolve no matter how much I shake and shake.
I was planning to add 45mL of this concentrate to 700mL of RO/DI water to make batches of general purpose cleaner for my vacuum style RCM.
Anyone else have this problem or have any ideas how to deal with it? Do I need to add some RO/DI to my concentrate to dissolve the EDTA and redo my math?
Some foaming is to be expected. You are essentially using a light detergent solution. In my opinion, scrubbing the record is probably not necessary, unless there is some crud or liquid dried on the surface of the record, maybe. The main thing is to move the solution around so that it gets into the record grooves and soaks/ loosens the crud for vacuuming up. I vacuum the cleaning solution for two or three revolutions of the record and I do the same for the distilled water rinse. This works well for me.
Can any of the chemists here tell me if this is a suitable Quat ??
Benzalkonium Chloride - BAC50
Congrats JBNY, glad things are working out well. Just a question, are you using the cleaning solution from inside your RCM reservoir or are you hand scrubbing with it, then using the RCM for water rinses?....
Used it on a few records, followed by an RO/DI rinse using my VPI 16.5 RCM and wow this stuff is the real deal.
That's a reasonable approach, since some contaminants require breakdown. The longer the incubation with the enzyme mix the better...just don't let the surface dry as the digestive enzyme mixes have binders that become sticky. That said, some records just aren't fixable due to physical damage (usually previously played with a bad stylus or handled improperly). EDTA is a chelator for divalent cations like Mg, Ca and other metals with 2+ charge. Good luck!I bought an early press copy of Hunky Dory at the weekend at the knock down price of $15 because it was very crackly despite looking clean to the naked eye. I've cleaned once with my current mix of Triton and 5% ISO but is still quite crackly. I'm going to do again with an Enzyme soak and then clean again.
Creon is a medical human digestive enzyme replacement mix : these work best at ph8ish so I'm going to add some Reef Buffer from the local fish store in RODI water !! The buffer contains a lot of Boron I believe so I've not used yet until I obtained the EDTA which I hope will chelate any heavy metals left behind and then rewash in the standard Triton/ISO/Quat/EDTA mix suggested in the early posts.
I'll let you know if it fixes the crackles