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Clip on Clear Handling Polycarbonate Tube - Braintree Scientific - Lab Research Products
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https://www.dnr-is.com/shop/300-777-test-tube-rack-polycarbonate-10-18-mm-holds-24-maximum-circulating-baths-5414
Test Tube Rack, Polycarbonate, 10-18 mm, holds 24 maximum (Circulating Baths) | DNR Bio-Imaging...