About Us

Conditions of Sale


  • No Minimum Order is Required.
  • Confirmation Orders are Not Required.
  • Standing and blanket orders are encouraged. The benefits offered you on these types of orders are minimization of paperwork, quantity discounts and firm pricing for the period of the order regardless of price fluctuations in the market

C.O.D. orders are accepted and will be shipped by either UPS or Federal Express; Customers' choice.


Every effort will be made to keep prices firm, but they are subject to change without notice.

Unless instructed otherwise, we will ship items that have increased in price as long as the increase is no more than 10%. When any increase is greater than 10%, we will contact you for authorization to ship.

Terms and Conditions:

Orders will be shipped F.O.B. Hatfield, PA with transportation charges prepaid and added as a separate item on the invoice. All shipping charges are the exact cost of charges from the carrier that we have incurred.

We are pleased to announce that we accept American Express, Discover, MasterCard, and VISA for your convenience. Established accounts (existing customers who qualify) can be set up on Net 30 terms. Please call to make these arrangements in advance. Personal orders are welcome.

Returns - Breakage - Discrepancies:

No custom orders or equipment may be returned. Return of chemicals can be an ISSUE and may not be possible. Please call us for more information before attempting to return chemicals.

Returns may not be made without prior authorization. To make a return, please repackage very carefully and include the following information:

  • Customer's name and address.
  • Customer's phone number.
  • Original purchase order number.
  • EMS invoice number.
  • Items that are ordered in error and are returned are subject to a 20% restocking charge if returned in 30 days or less and a 25% restocking charge if returned after 30 days.
  • Returns are not accepted after 60 days from the day of invoice.
  • Shipments should be inspected immediately upon receipt.
  • All breakage and discrepancy claims should be made promptly. We cannot be responsible for shortage or breakage of which we have not been informed within 7 days after receipt of shipment.

Legal Liability:

All EMS products are offered for research work only and not for clinical, food, cosmetic, household, or drug use. We offer no warranty and accept no responsibility for their use.
All the information and references presented in this catalog have been complied from sources considered reliable to the best of our knowledge.
It is the users' responsibility to determine the suitability of any material or procedure recommended.

New Products:

Additional items are continually being added to our line. Information in the way of our newsletters will be sent to you as it becomes available. If you can not locate an item that you require in our main catalog or in our newsletters, please call us. If we can supply it or locate it for you, we will be happy to do so. All special chemical formulations and packaging requirements are encouraged. Because we manufacture many of the chemicals ourselves, any special size or purity requirements are not a problem. Please let us know what you want.

If you would like to see us carry a product that is not currently listed in our literature or you have an idea for a new product, please let us know. We have received a lot of input from our customers over the years and many of the products that are currently in our catalog have come from our loyal patrons in the lab. We look forward to hearing from you.


Opening a new lab or need to buy a large quantity of supplies? Call us for special pricing today. Large quantity discounts are available and encouraged.


We have sales representatives throughout the United States as well as foreign distributors in the rest of the world. For the local rep in your area, please call or write us today.