Thunder Options

Thunder Scientific offers different options to customize our humidity generators. You can order these parts separately, or in addition to the standard configuration. In some cases you may have to order the option at the time you order your system because it can not added at a later time. Or you may order them as replacement parts. We also offer spare parts and repair kits for the most commonly needed items, see the Repair Kits and Parts page.

If you need something you don't see here, please call 1-800-872-7728 or fill out the comment box in our RFQ form. Be sure to sign up for our newsletter to learn about new products, accessories, and events.

Option Items

Thunder has several different options for each system we sell.

Model 2500 Options


Model 2900 Options

This is the Most frequently ordered option

The Tri-Port Chamber is made for the Model 2500ST humidity generator, and provides two additional ports to insert instruments for calibration as well as a third port with a 1/4" Swagelok® fitting port.


Tri-Port Configuration

Option ordering code


Note: The ordering codes are shown in parentheses and bold letters. Specify these codes when ordering.

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