Best lab dispensers according to redditors
We found 17 Reddit comments discussing the best lab dispensers. We ranked the 4 resulting products by number of redditors who mentioned them. Here are the top 20.
We found 17 Reddit comments discussing the best lab dispensers. We ranked the 4 resulting products by number of redditors who mentioned them. Here are the top 20.
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Parafilm M Roll, 125' Length x 4" Width https://www.amazon.com/dp/B0095K87QU/ref=cm_sw_r_cp_apa_-gnvybWJ13CDV
Treat yo' self
We use these in a chemical lab.
Here you go
https://www.amazon.com/dp/B01COLW9IS/ref=cm_sw_r_cp_api_i_cx4RDbB44VE31
https://www.amazon.com/dp/B01B573D4Q/ref=cm_sw_r_cp_api_i_My4RDbRV8BJ5Z
For less than the price of two shade bottles you can ensure you’ll never lose another drop. 2 because you purchased the one that spilled and the one that you’ll replace.
Happy painting.
https://www.amazon.com/gp/product/B005OD7AEM/
4.6 and below and you're golden. I test every can right after I open them. Only takes a tiny little bit of the strip. I've tested maybe 25 cans so far and I don't think I've made a dent in the roll.
Especially helpful when you're growing weird varieties of tomato that have an unknown acidity.
edit: according to the reviews, you would think these are only ever used for testing the PH of kombucha or a woman's vagina.
I don't pH my skincare products, but I do work in the lab and pH solutions on a regular basis.
If you want to get pH strips, it's important to get the ones with multiple color indicators. I'd suggest getting one from a reputable science supplier, like machery-nagel or milipore/emd. Don't get the cheapo single-color yellow test strips - those aren't very accurate or precise.
If you really care about accuracy / precision / reproducibility, just get a digital pH meter. You can calibrate them to pH standards (pH = 4, 7, 10, etc.).
Edited for typos
The roll I bought was only $25 at amazon. That's 250 feet, or enough to wrap 750 plates and comes out to around 3 cents per plate. Not bad IMO.
Something like these?:
http://www.amazon.com/Hydrion-Dispenser-0-0-6-0-Ph-Range/dp/B005OD7AEM/ref=sr_1_6?ie=UTF8&qid=1397415341&sr=8-6&keywords=pHydrion
http://www.amazon.com/Hydrion-Ion-Test-Kit-3-0/dp/B005R3CGO8/ref=sr_1_17?s=industrial&ie=UTF8&qid=1397415424&sr=1-17
nah that's not at all what you want, it's not measuring pH but concentration of sanitizer in solution. pH strips like this or something with a more specific 1.5-4 range would be ideal.
That said, pretty much any level of acidity is ok, 2.4-6 is rather ideal and I would consider 2.2 or lower necessary for pickling: however, I do not recommend pickling with homemade vinegar. In order to pickle safely you need to know not only the pH but the concentration of the vinegar and for that you need to test the presence of acetic acid in your vinegar, those tests are a lot more expensive ($50/$80) than a couple hundred pH strips.
This. IIRR StarSan should be a 3 or lower.
http://www.amazon.com/dp/B005OD7AEM/
These are the ones I use Boston Round Bottles and I seal the tops with parafilm though if you can find 1" wide tape instead of 2 that would be better. I normally have to cut the 2" tape in half to wrap the bottles. I've used both kinds of tops and haven't had any leak yet.
edit: format correction
I use this one: https://www.amazon.com/gp/product/B005KDF3X6
But the 1 inch roll would probably work well also.
I got these: https://smile.amazon.com/gp/product/B005OD7AEM can't comment on the accuracy but they have worked so far for me. Water is a dark green, honey I tested was more of a yellow. Will be using it to test sauerkraut soon
Parafilm. u/euthanized recommended it to me and I works like a charm.
https://www.amazon.com/gp/aw/d/B005KDF3X6/ref=sxts1?ie=UTF8&qid=1485350007&sr=1&pi=AC_SX236_SY340_QL65
No worries - I've got your Octomore poured. Check out my open inventory and let me know if you see anything else you'd like as a swap for 2 samples of the Kavalan. If not, I'm good just doing the singles. Inventory: https://redd.it/5i7zpv
As for the sample bottles, here's the stuff I use: https://www.amazon.com/dp/B01JL61KNE/ref=cm_sw_r_cp_ep_dp_ApXyyb4Z45MK5
When filling, only fill to the bottom of the neck (just below where the thread starts, and tighten that cap well. You can also use this stuff to put over the top of the cap: https://www.amazon.com/dp/B005KDF3X6/ref=cm_sw_r_cp_ep_dp_OqXyyb0D6A5EN
Get yourself a roll of this:
https://www.amazon.com/Parafilm-Roll-250-Length-Width/dp/B005KDF3X6
Cut a 2 inch square and stretch it over the opening. Keep thumb on top (don't need the lid) and you won't spill a drop. You can even leave it on and put the lid back on, the customer will need to break a little hole in it, but that's easy.