High purity Nitrogen gas ampoule, purity 99.99%
sealed in boro silicate ampoule under vacuum.
Size: length 100-110mm, dia. ~20mm
Invite friends favorite elements specifically tailored to collect various inert gases, helium, nitrogen, neon, argon, krypton, xenon, etc., oxygen, hydrogen, carbon monoxide, carbon dioxide, air purity can also be customized.
Shipping:
Goods sent to the United States for 7-10 days.
I will add a tracking number in EBAY and PAYPAL.
You can query in the United States Postal Service.
Outside the United States
We ship worldwide with flat rate shipping by China Air mail(Registration, can be tracked). This international order may take longer to arrive. Normally the shipping time is 15 to 35 business days 。
Return & Refund policy:
In all cases, buyers pay shipping fees at their own cost to return products for exchange or refund. We will be responsible for the postage of replacements.
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