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网页2020年8月11日 · 2. DankGeek. DankGeek has an extremely limited selection of 14mm ash catchers. Their current catalog is just three items. They have one 45° angle and one 90° angle in their inventory. The other is a honeycomb to turbine percolator ash catcher. While they’re short on stock, at least they offer a variety.

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网页Products name 10-20mL 18mm Screw Thread Headspace ND18 Dimension 18mm Cap Color Silver Septa details White, Red, Blue, 1.3-1.6mm thickness. Material Aluminum for Cap, PTFE/Silicone for Septa Package 100pcs/Pack

网页Gas chromatography-mass spectrometry (GC-MS) is an analytical technique that combines gas-chromatography (GC) and mass spectrometry (MS) to identify unknown substances or contaminants. Shimadzu is one of the world’s leading manufacturers of gas chromatograph mass spectrometers. Shimadzu's GC-MS instruments boast ultra-high sensitivity and

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网页18mm 10-20ml clear and amber precision screw headsapce vial. Aijiren produce 18 mm Screw Thread Headspace Vials using 1.25mm wall thickness type1 borosilicate glass material,

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