Other than what you you already have—beakers, etc, you'll need a scale to measure small quantities of chemicals. I use an Ohaus digital scale, but there are many other options—I'm sure you could pick up an Ohaus triple beam fairly inexpensively. That's about it. It doesn't take much and it's not the least bit difficult.
I picked up a digital jeweler's scale on eBay from a seller called Old Will Knot, or something like that. It came with a calibration weight. The scale works very well. I get some very small paper cups to spoon the chemicals into. Oh yeah, you need a spoon too. :-)
One more thing—get a GOOD dust mask to wear when working with the Pyrocatechin. A high quality, not a flimsy one strap dust mask, particulate respirator that will protect you from very fine dust. That and good ventilation—Pyro is not something you want to be breathing.
If you are looking for a scale, I second one from Old Will Knot, spent about $30 and accurate. I use the little dixie cups to measure small amounts. I also have some formulary Pyrocat-HD from 2/2012 that is still going strong today. I did put the A sol. in glass before the end of the first year. I also use separate syringes marked for A and B. There is some sediment or something at the bottom of the A bottle , but it works like the first day. If you want to save money on glycol you can mix it yourself at 2x, but you can still get it at the Tractor Supply store for about 20 dollars a gallon and it's 99% pure. The best thing about -HDC and -PC is that all you have to do is measure out the chemicals, put them in a bottle and pour in the p. glycol, stir, wait, and then stir each day. I also have some home mixed pyrocat-mc with the metol and AA in 100ml of glycerine at 250F that is going strong after two years and it has not changed color; it is still a very light red/orange. As for air, I don't use marbles, but I do put the solution in a smaller bottle when I can. Pyrocat-PC is the one that seems to change color over time, I have some that looks black but it works just like it did when I mixed it.
Well, I (and probably others) still learned something.Originally Posted by Kirk Gittings
Found an Ohaus triple beam here locally for $15. Am I going to need a set of calibration weights?
Thanks,
Kirk
at age 73:
"The woods are lovely, dark and deep,
But I have promises to keep,
And miles to go before I sleep,
And miles to go before I sleep"
PM me with your address and I'll be happy to send you one.
I emailed it Richard. Thanks so much!
Thanks,
Kirk
at age 73:
"The woods are lovely, dark and deep,
But I have promises to keep,
And miles to go before I sleep,
And miles to go before I sleep"
I'm relieved you figured it out. I did that once, as well. To minimize contamination chances, I use a syringe for part A and a very small graduated cylinder for part B.
“You often feel tired, not because you've done too much, but because you've done too little of what sparks a light in you.”
― Alexander Den Heijer, Nothing You Don't Already Know
I get mine pre-mixed from Bostick and Sullivan and keep it in the bottles they send it in at room temperature. It's perfectly fine for at least a year.
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