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Stain finish frame, calibrated to 25 mm x 1 mm pitch with friction thimble to permit consistent measurements. Machine-cut graduations, with ratchet stop.

* ClickSeal High-Capacity Microcentrifuge tubes fit all popular microcentrifuge rotors.
* Writing surface on flat cap and side wall for quick sample ID.
* Superior clarity and external graduations ensure accurate, reproducible lab results.
* Withstands temperatures from +121°C to -80°C and RCF of 27,000G with proper rotor support.
* Positive Click Seal design allows repeated cap closure and eliminates pressure-induced popping of caps during incubation.
* Certified RNase-DNase Safe for Total Sample Integrity.
* Thin membrane in Cap Center Allows easy access to Sample by Syringe Needle.
* Click Seal Microcentrifuge Tubes 0.5ml, 1.5ml, 2.0ml are engineered to close with a “snap” and stay closed during centrifugation up to 18,000 RCF – even during boiling or autoclaving.
* A wide range of colored tubes for easy sample identification.
* The tubes are manufactured of a copolymer material to offer exceptional strength and chemical resistance.
* These tubes feature ultra-smooth conical bottoms, which allow for 100% visibility and no sharp “gates” to cause cuts and scratches.
* Diamond polished molds allow tubes to be manufactured without contaminating releasing fluids.

Made from clear flat glass, uniform in size and free from scratches, packed in plastic box, net weight 10 gms.

Cavity slides for VDRL, Kline, BJL.and other serodiagnostic tests. Slide size 75 x 56 x 3 mm with polished concave cavities, each 16 mm dia x 1.75 mm depth with polished edges, frosted surface for smooth marking. Each piece packed in velvet lined box.

For measuring and sampling gas given off by aquatic plants e.g Elodea. Comprises a bulb tube graduated 0 to 150 mm into which the cut end of the shoot is inserted. A 5 ml syringe is provided at top to draw gas collected in the burette for analysis. Overall height 300 mm.