I think the rose developed rose canker. I have had several roses with this problem. The solution is to prune back to where you see only green canes and then treat with lime and sulfur solution. That has worked for me-it is sold at Ace Hardware store or Home Depot. Make sure you sterilize the pruner after use.
Pitting resistance equivalent number (PREN) is a measurement of the corrosion resistance of various types of stainless steel.Exact testing procedures are specified in the ASTM G48 standard. In general: the higher PREN-value, the more corrosion resistant the steel.The PREN-value is calculated using the following formula: PREN = 1 x %Cr + 3.3 x %Mo + 16 x %N (w/w) Steels with PREN-values above 32 are considered seawater (corrosion) resistant.urthermore a PREN-value â¥ 40 for duplex steels is called for in the DIN EN ISO 15156 as well as the American NACE â a standard for use in hydrogen sulfide environments known in the oil and gas extraction industries. Exception: stainless steels with molybdenum content â¥ 1.5% may have a PREN-value â¥ 30.
Standard Mail refers to mailings of at least 200 addressed pieces (or 50 pounds) of mail sorted. and prepared according to postal standards. Presorted standard Mail is a work-sharing program; ASC and the Postal Service share the work of processing the mail. When we do some of the. preparation and sorting, it saves the Postal Service time and money. They pass these savings on. to us in the form of postage discounts.