Purchase Order Form for Credit Card Payment

To expedite credit card purchases, please fill in this form. We will then prepare an e-invoice. We use PayPal to handle all the payment steps and will not have any record of your card numbers. Please note that all transactions are in US dollars. It is important that you fill in all the information requested. Please note that if you have any trouble, you can send us an e-mail with the words SOFTWARE PURCHASE ORDER in the Subject line to info@silbert.org and we will be able to prepare the e-invoice from it.

Name
E-mail address
Tel
FAX
Company name
Mailing address

SOFTWARE - EXCEL SPREADSHEETS
C-tower - calculate consumption of water and treatment products in cooling towers
W-index - calculate carbonate scaling indices and equilibrium diagrams
Boil-Bal - calculate water and energy balance in boilers
Phosph8 - calculate sodium-to-phosphate ratios in boiler water

WATER-TREATMENT MANUALS
Monitoring and Controlling Industrial Systems, 2nd Ed
Optimizing Water Treatment for Plant Utilities, Offsites and Electrical Generation

HOW DO YOU WISH TO SHIP?
We will try to obtain the best shipping and handling charges. There will be no S&H charges if we can send things via e-mail attachment.

APPLICABLE TAXES

Please feel free to leave your comments in the space below about:
1) the software, including any suggestions you would like to see added
2) any ideas or questions that you might have
3) any problems you have encounterd and
4) any special ordering considerations such as quantity orders.



This page was last updated 2017-August-04