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procedures involving small, disposable plastic chromatographic columns . Sealed in a convenient, resealable dispenser, the wiper size is 9 x 11 in .
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Figure 19.5. (A) Structure of an alkali-silicate glass; (B) a Q2 structural unit which comprises two bridging oxygen atoms and two non
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apparatus, Kimble® offers a comprehensive selection of adapters including bushing adapters, connecting adapters, distillation adapters, filtration adapters,
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choice more than a century later. PYREX's chemically stable, heat-resistant, low-expansion borosilicate formula can be found in laboratories all around the.
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A low coefficient of thermal expansion combined with high trans- Characteristically, glass is highly resistant to water, salt solu-.
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High temperature, long-life, and low bleed septa for gas chromatography Venting needles are designed for adding or removing liquid from a sealed vessel.
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environmental samples by high resolution gas chromatography/high resolution mass spectrometry Because very low levels of pesticides are measured by this.
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12 x 32mm Vials . 42000-10-295-signature 10 — 2008 catalog — Grace — proof 5 (kw) — september 7 ... a. Poor sample recovery often occurs when the packed.
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Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and. ASTM E438, Type I, Class A requirements. Part Number.
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leakproof seal even at very low temperatures. Closures and tubes are both made of polypropylene having the same coefficient of expansion, which further
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the lowest evaporation rate of all autosampler vials. • Additionally the glass surface a low expansion coefficient even at high temperature variations.
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As a consequence, determination of a high boiling solvent in a lower boiling In the case when a sealed vial containing the sample (a few milligrams or ...