Sturdy and thick walled plastic test tube with cap is made from soda bottle material, ensures a durable test tube with a tightly screwed cap, to maximize lab use and minimize leaks. Total length is 126mm, inner diameter is 22mm, and outer diameter is 24mm.
Crayon Refill, 12-Count Tuck Box Standard Size, Red, Refills for regular crayon, Uniformly blended pigments, Excellent for home, school, office, daycare, camp, church group and more, AP Certified, conforms to ATSM D 4236, safe and non-toxic
Crayon Refill, 12-Count Tuck Box Standard Size, Black, Refills for regular crayon, Uniformly blended pigments, Excellent for home, school, office, daycare, camp, church group and more, AP Certified, conforms to ATSM D 4236, safe and non-toxic
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