Hanna Instruments 10 ppm Nitrate Standard (as N) Sachet

HI9829-14 is a premium quality 10 ppm Nitrate Standard (as N) calibration standard. The standard is used to calibrate the HI7609829-12 Nitrate ISE. Each sachet has the lot number and expiration date stamped on it. The sachet is made of light block and air-tight foil ensuring freshness each time one is used. Hanna's line of calibration standards have been formulated to have an expiration of 5 years from the date of manufacture for an unopened sachet. The HI9829-14 is for 25 sachets containing approximately 25 mL of buffer. Pre-mixed to exact standard value pH and ionic strength stabilized Lot number and expiration date on each sachet