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Instrument Depot, a name you can trust.

Instrument Depot specializes in gas detector tubes and precision calibration gas. We supply our trademarked PORTACAL® brand calibration gas, manufactured by Gasco. We can provide equivalent calibration gas mixtures by all manufacturers. Instrument Depot is a leading distributor for Gastec, Nextteq, Drager and Nextteq, supplying gas detector tubes and detector tube pumps. With over 50 years of combined experience, we are your #1 source for calibration gas and detector tubes.

We offer exceptional service with technically trained customer service personnel who you can depend on to answer your questions quickly and efficiently.

Instrument Depot: Reliable, Fast, Friendly Service

Shop with us ONLINE anytime, 7 days a week, 24 hours a day. We accept Visa, Mastercard, American Express and Discover.