| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| liz | "What size tedlar bag is needed for the bucket, and have we ever put in a bulk order for them? " | Read more » | over 6 years ago | |||
| gretchengehrke | "Here's another resource for soil sampling procedures: https://archive.epa.gov/region9/toxic/web/pdf/ee-soilsampling-sop-env-3-13.pdf. " | Read more » | almost 7 years ago | |||
| Ag8n | "What do you think of the ones that are transparent on all four sides? That way the cuvettes can be used for trans, abs, flores, or turbidity. The..." | Read more » | almost 7 years ago | |||
| stevie | "I'm not sure. Think these would maybe need to be separate questions? " | Read more » | almost 7 years ago | |||
| warren | "What are the requirements for the bucket, like material and size? I think uline.com is a good place to start, or US Plastics... Isn't it supposed t..." | Read more » | almost 7 years ago | |||
| stevie | "I know. I guess in compairson to some of the other canister systems which look around the 2k range, it is pretty good. Things start getting expensi..." | Read more » | about 7 years ago | |||
| zengirl2 | "Wow, so I thought this easy answer was Bucket Brigade until I saw the $250 pricetag. " | Read more » | about 7 years ago | |||
| warren | "Some questions I have: How important (and for what types of sampling) is refrigeration? How quickly do different types of samples have to be shipp..." | Read more » | about 7 years ago | |||
| warren | "These look good too, and come with a spectrum datasheet: http://www.ledgroupbuy.com/solderless-true-violet-led-405nm/ " | Read more » | about 9 years ago | |||
| warren | "Powered on one of these, with a dial: http://www.watterott.com/de/Wattuino-Nanite85?x56e76=f63b1cee028854c06b93338f2945a806 " | Read more » | about 9 years ago | |||
| warren | "Here's the big list of UV LEDs below 405 nm " | Read more » | about 9 years ago | |||
| warren | "Crap, those are only in quantities of 400+ or 1000+. I'll keep looking. " | Read more » | about 9 years ago | |||
| warren | "@tonyc @ygstcu - looking at higher powered LEDs, I've found: ~$4.40: http://www.digikey.com/product-detail/en/VLMU3500-385-060/VLMU3500-385-060TR-..." | Read more » | about 9 years ago | |||
| warren | "@ygzstc - pointing you at this note since you've ordered some very bright UV LEDs. Oops, missed your comment mathew - we'll have to try that, thou..." | Read more » | over 9 years ago | |||
| mathew | "Ok- so styrene cuvettes are dissolved by diesel fuel and several other oils. In the photo below you can see the bottom dissolving into a sticky mes..." | Read more » | about 10 years ago | |||
| jaia | "I love the price on these cuvettes from Carolina Biological -- $29.95 for a pack of 100. http://www.carolina.com/spectrophotometer-accessories/spec..." | Read more » | about 10 years ago | |||
| mathew | "What happens if you unscrew the lens on the laser and put it in front of the LED? can you concentrate the light to make a brighter point? " | Read more » | over 10 years ago | |||
| amysoyka | "Also some tips on the straws. *Straws seal best of you wait until the tongs are hot and then put them in. *To get liquid in them, flip, squeeze, ..." | Read more » | over 10 years ago | |||
| amysoyka | " @warren As far as I can tell, kinda this was done with a cheap UV light - not a high intensity laser LED... " | Read more » | over 10 years ago | |||
| mathew | "Gelatin capsules are super cheap, and gelatin is very transparent. they won't dissolve in oil, I don't think-- but they are water soluble. That wo..." | Read more » | over 10 years ago | |||
| warren | "Just mention it because the pill is filled with liquid, and reminded me of your straws. " | Read more » | over 10 years ago | |||
| warren | "Amy, have you tried shining a laser through those? I had the odd experience today of finding a fish oil pill, and look what happens when you shine ..." | Read more » | over 10 years ago | |||
| mathew | "I love the straws! grabbed a stack myself today. " | Read more » | over 10 years ago | |||
| amysoyka | "Yup. ^_^ " | Read more » | over 10 years ago |