EDT directION products

EDT directION produce a wide range of stock standards to ensure that ISE calibration is both simple, accurate saving valuable time in a busy laboratory. All of our stock standards are 1000ppm and are supplied in 500ml leak proof bottles. It is anticipated that the end user will prepare standard sets by serial dilution of this stock standard as required. Please ensure that lower concentration standards (typically below 10ppm) are not kept for future work as this gives cause to potential errors as concentration of these may be affected significantly during storage.