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Powder-Coated Metal Stand

Test Tube Stand Test Tube Stand contains six 25 mm dia holes & eight 19 mm dia holes in its top plate

WT85B Sound Level Meter Digital Decibel Meter Digital Noise Meter Environmental Noise Tester, WT85B White, WT85B Black Option:WT85B Black com/products/test-tube-brush-pack-of-144-by-labpro#product"Measuring Rang : 30 130dBA Accuracy + 1. 5dB Frequency response : 31. 5HZ 8KHZ Frequency weighting : A weight Resolution: 0. 1dB Working temperature and humidity0 40 10 80%RH Storage temperature and humidity 10 60 0~90%RH Specification: Package Weight One Package Weight 0. 23kgs 0. 50lb One Package Size 24cm * 13cm * 5cm 9. 45inch * 5. 12inch * 1. 97inch Qty per Carton 60 Carton Weight 14. 50kgs 31. 97lb Carton Size 48cm * 41cm * 50cm 18. 9inch * 16.