To return or exchange an item, please contact our Customer Support at 480.348.0278 or email support@sperdirect.com to be issued an RGA #.

Items returned without an RGA # will not be processed, and will be returned to the originating address.

Claims for items that were received Damaged or Defective must be made within 14 days of the invoice date. If you are not satisfied with a product you may return it within 30 days of the invoice date for replacement or a refund, minus the cost of Shipping and Certification (if applicable). To avoid a restocking fee, returned items must be in new condition and include the original packaging, instructions, and accessories. When we replace an item, we also cover the cost of shipping the replacement to you. Please see your warranty for problems that occur after 30 days. The warranty period of each product is stated on the product page of the site.


Sper Scientific warrants this product against defects in materials and workmanship for the stated period (each product's warranty period is list on it's product page, and inside the instruction manual) from the date of purchase, and agrees to repair or replace any defective unit without charge. If your model has since been discontinued, an equivalent Sper Scientific product will be substituted, if available. This warranty does not cover probes, batteries, battery leakage, or damage resulting from accident, tampering, misuse, or abuse of the product. Opening the meter to expose its electronics will void the warranty.

To obtain warranty service, please contact our Customer Support at 480.348.0278 or email support@sperdirect.com to be issued an RGA #, items returned without an RGA # will not be processed, and will be returned to the originating address.

Register your product online at www.sperwarranty.com within 10 days of purchase.


With technology upgrading, some computers no longer have a disc drive for you to install the software that comes with your meter. We have created a software page where you can download the software that came with your meter. You can find the link on each product page that has software available or CLICK HERE to go to the software page.

Note: Some software may not be directly available to download due to it must be purchased. If you find that the software you need is not available, please contact our Customer Support at 480.948.4448 or email info@sperscientific.com for further assistance.

Hours of Operation:
Online ordering is available 24-7. Customer Service is available Monday-Friday, 8:00 a.m.-4:00 p.m. Arizona Time.

Note: We fill all our online orders Monday-Friday 8:00 a.m.-2:00 p.m. If you order is placed after 1:00 p.m. Monday-Thursday your order will be filled the following business day. Orders placed after 1:00 p.m. on Friday, and through the weekend will be filled the following Monday.

Product Availability & Backorders:
Most items are in stock. If "BACKORDER" appears under the item's image during checkout, it is out of stock and you will not be billed until your order ships.

Types of Payment:
We accept VISA, MasterCard, American Express and Discover. You may also pay by check, money order, PayPal, COD or Telex Transfer ($25).
If paying by money order/check, your order will ship once your payment clears the bank. Send payment and a copy of your order invoice to:

Sper Scientific Accounts Receivable
8281 E. Evans Rd., Suite #103
Scottsdale, AZ 85260

Delivery & Shipping:
For orders shipped via UPS, we will send you automated tracking information. Sper Scientific has no control over in-transit carrier delays. However, if an unusual delay occurs, contact us at 480.348.0278 or support@sperdirect.com and we will work with the carrier on your behalf. We reserve the right to use alternate carriers.

International Orders:
International orders that are billed or shipped to an address that is outside of the USA (excluding Canada) must be paid by Telex Transfer. During checkout, select "Telex Transfer" as your method of payment. Shipping rates are automatically calculated but do not include customs clearance, the $25 Telex Transfer fee, or any fees charged by your own bank. In accordance with Government regulations and carrier policies, duties, taxes, and brokerage fees may be billed to the customer by the carrier. Depending on your location, duties/taxes may be Substantial. After you place your order, we will email you with our banking information.

Technical Support:
Many answers are found in the downloadable instruction manuals or demonstration videos available for reference on each product page. Please email support@sperdirect.com if you have additional questions.