Need to reference P.O. number on invoice When you checkout on line and choose to have an invoice you enter your P.O. number. However Kline never references that P.O. number on it's invoice which makes it hard to match up for payment.

good but.... I really enjoy using Kline Medical. I purchase a product repeatedly and wish I had a coupon for being a frequent buyer. That aside, the quality is amazing and shipments come very quickly.

Won't be buying here again I needed an oximeter extremely quickly for work. I ordered the appropriate product with overnight shipping. Since I ordered before noon and I'm only 5 hours driving from them, I thought I'd have it the next day, if not shortly after. Since I did not recieve it after 3 days, I called them, just to find out the product is not longer made. I wonder when I would have found out if I hadn't called.

good quick service -

Nice, but wrong size. I ordered 2 pint sized shakers and 1 quart sized shaker. I received just the reverse. The products themselves are nice quality but just not exactly what I ordered.