I use an API freshwater Master Test Kit and that has 4 test tubes and I also use API GH and KH Water Test Kit with 2 test tubes.
I was looking on eBay and Amazon websites looking for a simple test tube rack for up to 6 tubes with drying pins for using with the above test kits.
They are available, and prices range from £5 to £50+, I ordered one, a white plastic one, at £7.99 including postage from Hong Kong! Thought that'll do me.
2 weeks later, i got the package, what a disappointment! I know its only a test tube rack but it was so cheap and very plasticky and extremely poor quality.
Also it was the wrong size too! 22mm holes and pretty massive. Utter rubbish, so I sent it back, got full refund.
Carried on looking for a smaller test tube rack, few and far between, usually the same sort of poor quality ones in plastic or MDF!
Sod that, I'll make my own, how hard can it be?
Found 3 plastic sheets about 5mm thick, long thread screws and plastic tubing covers, from a car boot sale, all for a pound!
Also found 4 x 8" plastic dowels (usually for cakes) online, £1.49.
Basically in short, drilled holes, made a tier for test tubes using long thread screws and plastic tubing to cover the screws cut to size and cut dowels to size and used as drying pins, screwed dowels on from underneath
Spent 2 half days making these (I broke 3 in the process, gotta be gentle drilling holes!!)
Here are the results, pretty pleased with myself if I may say so myself.
So, at a total cost of £2.49, some imagination and patience, I am not particularly good at DIY therefore anyone can make their own test tube rack at far better quality than most websites selling these below £10.
If anyone want more details on how to make these, just let me know. And I do my best with pics to show a basic process how this was made.
Edited by Ch4rlie, 21 August 2013 - 11:35 PM.