A stand made to fit the API Freshwater Master Test Kit. This fits the new plastic style tubes API uses, unsure if it fits their old glass variants. Can fit all the included bottles in the back, the color card, and has both slots for PH in the front. The tubes fit snugly in place. 

The printed example has short walls that let the bottles fall over, the actual uploaded model has 15mm higher walls to hold the bottles in place better.