antinn
Responses from antinn
| The "Very Best Record Cleaning Formulation" @lewm, The KL Audio is 40kHz, with four 50W horizontally positioned transducers, two each side (200W total) with a UT tank volume of only about 0.78L - that is it's a very powerful machine. Note that the reservoir is 2.4L, but someone recently m... | |
| The "Very Best Record Cleaning Formulation" 1,1,2-Trichlorotrifluoroethane is also officially identified as CFC-113 by the EPA such as Ozone-Depleting Substances | US EPA, by ASHRAE STD -34, Designation and Safety Classification of Refrigerants, and by CDC such as Preventing Death from Exce... | |
| The "Very Best Record Cleaning Formulation" @mijostyn, RE: Is there any data on the extraction of ESO by Chlorofluorocarbons? Granted it is only 1% of the formulation but wouldn't extraction of ESO actually harden the PVC? Not that I am aware of. The Navy in 1994 reported testing of N... | |
| The "Very Best Record Cleaning Formulation" @lewm, In polymer science there is an entire field of study surrounding the Hansen Solubility Parameters with a brief introduction here: Mechanical Properties of Polymer Nanocomposites (turi.org). There is a large handbook available to purchas... | |
| The "Very Best Record Cleaning Formulation" Figure 39 – Water + Alcohol Surface Tensions of at 25°C from PACVR (adapted with permission copyright 1995, American Chemical Society) Data for Figure 39 is from “Surface Tension of Alcohol + Water from 20 to 50°C”, Gonzalo Vazquez, Estrella ... | |
| The "Very Best Record Cleaning Formulation" In the interest of accuracy, in my last post I stated - " The formula provided by @wizzzard is by weight 22% ethanol and 0.038% Tergitol 15-S-7 which ~380 ppm which is 10 x CMC." I made an error, the concentration of Tergitol 15-S-7 is 38 mg, and... | |
| The "Very Best Record Cleaning Formulation" @pindac, @whart, and any others reading, Thank-you for the kind words. Keep in-mind that what I present is a process - not a single chemistry. My aqueous process is centered around pre-clean, rinse, final-clean, rinse and is the industry stand... | |
| The "Very Best Record Cleaning Formulation" @mijostyn, If you ever took the time to read the book you would find a multitude of methods, beyond the in-expensive manual process; not everyone has your wealth. Also, its rather inexpensive to filter US tanks to 0.2-micron absolute keeping the ... | |
| The "Very Best Record Cleaning Formulation" @wizzzard, If you carefully read @drkingfish he mentioned ’us’ that is a common abbreviation for ultrasonic (tank). Otherwise, here a phase diagram for ethanol-water - Ethanol-Phase-Diagram.jpg (800×695) (moonshinedistiller.com) and distillation... | |
| The "Very Best Record Cleaning Formulation" @wizzzard, To the contrary - I know exactly what I am saying. I am the author of this book - Precision Aqueous Cleaning of Vinyl Records-3rd Edition - The Vinyl Press with over 20-yrs experience in developing precision cleaning processes for sh... | |
| The "Very Best Record Cleaning Formulation" @drkingfish WARNING: 22% Ethanol is flammable with a flashpoint of about 75F. Using this concentration in an Ultrasonic Tank with 100’s or 1000’s of mL that is not explosion proof rated is dangerous. With an ultrasonic unit three mechanisms ar... | |
| Vinyl static ionizers who's used them? James H. Kogen, Phonograph Reproduction 1978, Audio Magazine May 1978, Audio-1978-05.pdf (worldradiohistory.com) goes into some detail on static; what causes it and what does not – the needle in the groove was not a source of static. | |
| Hand Sanitizer for Ultrasonic Record Cleaning? Be careful with alcohol and ultrasonic tanks. Ethanol (in water) > about 7% and IPA (in water) > about 10% are classified by the NFPA as flammable with a flashpoint of 100F. With an ultrasonic unit three mechanisms are in play - the heat t... | |
| Hand Sanitizer for Ultrasonic Record Cleaning? This is the material safety data sheet (MSDS) - D-40035.en-us.pdf (xerox.com). The alcohol is ethanol and this type of antiseptic was rushed into service for COVID and it follows FDA guidelines. BUT this is good as an antiseptic - not as a clean... | |
| VPI Fatboys versus others in its' tonearm weight class. @laynes, With your VPI Prime Signature if you do not have speed control of the motor that is still an option. Most people think the older VPI SDS is better than the current ADS, and VPI has discussed a better version of the ADS for the future, ... |