Ready-made Solutions Buffer solutions that can be prepared in small batches from capsules, tablets or powders, are called “fresh” because they are prepared at the time of use. They are considered to be, but are not very precise. The quality of buffer solutions produced depends on many factors including the quantity and quality of the chemicals and distilled water used in production. Other important factors are the temperature and the instruments used to prepare them. Hanna buffer solutions are checked carefully, in an aseptic environment with the highest precision reference instruments, and are calibrated to NIST Standards. Hanna solutions are more convenient than the so-called “fresh” solutions. The main standard buffer solutions produced by Hanna are available in bottles or in sealed sachets, complete with or without a certificate of analysis. The following pages show the series of calibration solutions in the various types of packages that will satisfy every application need, while always guaranteeing a highly accurate buffer. Certified Solutions For those operators who request it, we provide standard solutions complete with certificate of analysis. These certificates are prepared in accordance with NIST standards to avoid any possible error in determining the actual pH value. The certificate shows the date of production, batch number and expiration date. Safety Data Sheets Download Safety Data Sheets (SDS) from our website at: www.hannainst.com. Table of Reference Temperatures All calibration solution bottles are provided with a label presenting a reference table of the relationship between pH or conductivity values and temperature. Hanna seal of freshness Our air-tight bottle with tamper-proof seal of freshness ensures quality. pH and ORP Solutions 2 pH 2.158 | www.hannainst.com solutions
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