When to Reach for a 1382 ppm Calibration Solution
One value, 1382 mg/L, in a 500 mL bottle. It is prepared against NIST 2202 potassium chloride, using certified balances, Class A glassware and certified thermometers. That chain is what makes the number on the label mean anything at all. The bottle is air tight under a tamper-proof seal, with the lot number and expiry printed on the label. Unopened it carries five years from manufacture.
Picking the Right Bottle for TDS Meter Calibration
Hanna testers that read both scales take a single calibration point, and they will accept either 1413 µS/cm or this bottle. Which one you open depends on the side you are calibrating. If the meter is showing microsiemens, reach for the 1413 standard. If it is showing ppm, reach for this one. Let the bottle warm to room temperature before the probe goes in. Then read the chart on the label for the temperature you are actually working at. One limit worth naming plainly. This is one value on one scale. A meter set to the 4-4-2 or 700 factor will not land on the label figure, and Hanna makes a separate standard for that case.
Key Features
- 1382 mg/L TDS: The ppm-side calibration point that Hanna combo testers recognise.
- Pairs with the 1413 standard: One bottle for microsiemens, this one for ppm. Same meters, different scale.
- NIST 2202 traceable KCl: Prepared with certified balances, Class A glassware and certified thermometers.
- 500 mL bottle: Enough for a season of routine checks between feeds.
- Temperature chart on the label: The real conductivity figure at the temperature you are standing in.
- Lot and expiry marked: Air tight under a tamper-proof seal, five years from manufacture unopened.
- One scale, by design: Meters on the 4-4-2 or 700 factor need a different standard.
Technical Specifications
| Specification | Value |
|---|---|
| Brand | Hanna Instruments |
| Part Number | HI7032L |
| Type | TDS standard solution |
| TDS Value | 1382 mg/L, 1382 ppm |
| Volume | 500 mL, about 16.9 fl oz |
| Composition | Potassium chloride in deionised water |
| Traceability | Prepared against NIST 2202 SRM potassium chloride |
| Preparation | Certified balances, Class A glassware, certified thermometers |
| Label | Temperature chart, lot number and expiry date |
| Packaging | Air-tight bottle, tamper-proof seal |
| Shelf Life | 5 years from manufacture, unopened |
| Paired Standard | HI7031L at 1413 uS/cm, for the conductivity scale |
| Other Scale | HI70442L at 1500 mg/L, for 4-4-2 scale meters |
| Other Sizes | HI7032M 230 mL, HI7032/1L 1 L, HI70032P 25 x 20 mL packets |
| Use | Calibrating TDS and PPM meters on the matching scale |