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Estimated Delivery
Mar 12 - Mar 19
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Free standard shipping on orders over $99
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
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يستخدم جهاز FID الخاص بنا مشعل سيراميك فريد من نوعه يمكنه العمل ساخنًا بشكل مستمر، وإعادة إشعال اللهب على الفور حتى عند تعرضه لحقن مياه كبيرة أو ارتفاعات ضغط من التنظيف العكسي للعمود.
ملحوظة: بالنسبة لجميع الطلبات الدولية، سيكون المشتري مسؤولاً بمفرده عن التخليص الجمركي والرسوم والضرائب المفروضة على العبوة.
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The flame ionization detector is the most commonly used GC detector, responding linearly from its minimum detectable quantity of about 100 picograms to almost 100%.
The FID responds to any molecule with a carbon-hydrogen bond, but not at all, or poorly, to compounds such as H2S, CCl4 or NH3. The FID response is very stable from day to day, and is not susceptible to contamination from dirty samples or column bleed.
The chromatogram above shows 250 ppm C1-C6 hydrocarbons (methane through hexane) standard as detected by the FID. CO2, also at 250 ppm, is converted to methane by the Methanizer accessory in the jet of the FID detector.
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