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Compatible with ASTM particle size analysis procedures
Heavy-duty claw hook securely grips bark during measurement
Stainless Steel frame with welded eyelets for mounting frame to stake frame into streambed (rebar stakes not included)
One thing you could say about glass thermometers is that they give a sense of false certainty about the temperature because one can see the physical expansion of the liquid inside the glass
Pro Scraper II - Algae Scraper Bound Notebooks Compatible with ASTM particle sizeProduct Code: PR241 Designed for removing tough algae from aquarium tanks, these algae scrapers will not scratch glass or acrylic. Include three types of easily changed replacement blades for all your cleaning needs: fabric covered, plastic and stainless steel.