Sales, Tech Support, Orders
Phone 8-5 M-F Central Time
800-942-0315 (U.S. & Canada) or 847-918-3510
Click here to email us
Credit Card Orders
We accept American Express, Discover, MasterCard, VISA
See our Privacy Policy
Call us at 800-942-0315 to place your credit card order or
fax your order to 800-949-7502
AMEX, Discover, MC, Visa
Purchase Orders

To set up an account with us please download our terms and conditions and credit application:

Terms and Conditions
Download Terms and Conditions

Excel Credit Application
Download Excel Credit Application
pdf Credit Application
Download pdf Credit Application

Use either the Excel spreadsheet or the pdf form.
Please allow 7 to 14 days to process your credit application.
Please urge your credit references to respond quickly.
You may use your company credit card until the application process is complete.

Email purchase orders to

To make sure your purchase order gets through:
pdf file attachments are preferred
Convert spreadsheets or Word documents to pdf files
Compressed files such as .zip or .rar are automatically discarded
Files with macros are automatically discarded
Strings of asterisks *** may be flagged as spam
Please include a relevant Subject in your email

Purchase orders can be faxed to
800-949-7502 or 847-968-4891

Payment in full is due net 30 days from our invoice date
Checks must be made out to Absolute Process Instruments
Mail remittance to
Absolute Process Instruments
Accounts Receivable
1220 American Way
Libertyville, IL 60048

Reselling Our Products

If you plan to resell our products there are two forms we need

Open Illinois form CRT-61 Certificate of Resale
Download Illinois form CRT-61 Certificate of Resale
Resellers must fill out and send us the Illinois Certificate of Resale CRT-61.
If you are a reseller outside of Illinois, this form is still required.

pointer Your state resale tax certificate(s) must be provided if you are a reseller.
Copies can be emailed to or faxed to 800-949-7502.

Lead Times and Shipping

Call factory to get the exact lead time for your order.
7-25 business days for most API-manufactured products.
3-4 weeks for API current sensors if not in stock.
3-4 weeks for Seneca products if not in stock.
Call factory to get the exact lead time for your order.

Normal shipment via UPS Ground
Other shipping methods are available upon request
Prices F.O.B. Factory, Libertyville, IL 60048 USA

Regulatory Compliance

Proposition 65
NAFTA Certificate
Conflict Minerals
Reach Statement
Regulatory Compliance page

API Sales Partners & Distributors

Click here to find your API sales partner or Call 800-942-0315 for your local API distributor

API sales partners can assist you with your application, product selection, and can provide on-site assistance.
Some specialize in certain industries or markets, and may stock popular models.

International Sales Partners

Call Us - 800-942-0315
International Exporter
Maida International Ltd.
Locust Valley, New York
Phone: 516-676-3079
A.P.C.S. Pty. Ltd.
Seven Hills NSW Australia 2147
Phone: +61 2 8825 9295