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=====Frequently Asked Questions (Ion-selective electrodes)===== | =====Frequently Asked Questions (Ion-selective electrodes)===== | ||
====How often do you need to calibrate? | ====How often do you need to calibrate? | ||
- | Recalibrate | + | Calibrate |
====How long after being opened or made are standards good?==== | ====How long after being opened or made are standards good?==== | ||
The stock standard will last at least six months before discarding, whereas diluted standards treated with ISA/pH buffer should be prepared weekly. | The stock standard will last at least six months before discarding, whereas diluted standards treated with ISA/pH buffer should be prepared weekly. |