Hanna TDS Calibration Solution HI70038P – 6.44 g/L (ppt), 25 × 20 mL
The Hanna TDS Calibration Solution HI70038P – 6.44 g/L (ppt) is a premium-quality calibration solution designed for calibrating compatible Total Dissolved Solids (TDS) meters. Manufactured by Hanna Instruments, this solution provides a standardized TDS reference value of 6.44 g/L (ppt) at 25°C. It is supplied in 25 individually sealed sachets, each containing 20 mL of solution, making it convenient for laboratory testing, fieldwork, and routine instrument maintenance.
Accurate calibration is essential for obtaining dependable TDS measurements. The Hanna HI70038P calibration solution helps users check and adjust compatible TDS meters according to the manufacturer’s calibration procedure.
Key Features of Hanna TDS Calibration Solution HI70038P
- TDS Value: 6.44 g/L (ppt) at 25°C.
- Convenient Packaging: Supplied as 25 single-use sachets.
- Individual Sachet Volume: 20 mL per sachet.
- NIST Traceable: Prepared using a standardized measurement process traceable to recognized reference materials.TDS Calibration Solution
- Temperature Reference Chart: The actual TDS value at different temperatures is printed on each sachet.
- Light-Blocking Packaging: Foil sachets help protect the solution from UV light exposure.
- Lot and Expiration Information: Each sachet is marked with its lot number and expiration date.TDS Calibration Solution
- Long Shelf Life: Unopened sachets have a manufacturer-stated shelf life of five years from the date of manufacture.
Product Description
The Hanna TDS Calibration Solution HI70038P is formulated for calibration of compatible TDS meters that require a 6.44 g/L (ppt) reference solution. It is particularly suitable for instruments that measure TDS in the higher concentration range, including compatible Hanna DiST-2 HI98302 testers.
The solution is standardized using a conductivity meter calibrated with potassium chloride NIST 2202 SRM in deionized water for analytical use in accordance with ISO 3696/BS3978. Certified weight-checked balances, Class A glassware, and certified thermometers are among the equipment used in its preparation.
The individual sachet packaging is practical for laboratories and users who do not calibrate their instruments frequently. Instead of repeatedly opening a large bottle, users can open a fresh sachet when calibration is required. This helps minimize contamination risks and supports consistent handling.
Applications of Hanna HI70038P
1. TDS Meter Calibration: Used to calibrate compatible TDS meters requiring a 6.44 g/L (ppt) calibration standard.
2. Laboratory Instrument Maintenance: Suitable for routine calibration procedures in research, educational, and analytical laboratories.
3. Water Quality Testing: Supports reliable TDS measurements when used as part of a proper instrument calibration and testing procedure.
4. Field Measurements: Lightweight individual sachets are convenient for portable instruments used outside the laboratory.
5. Quality Control: Helps laboratories and technical users maintain measurement consistency by following recommended calibration schedules.
How to Use
Follow the calibration instructions for your specific TDS meter. Confirm that the instrument supports a 6.44 g/L (ppt) calibration standard before use.TDS Calibration Solution
- Select an unopened sachet and check its lot number and expiration date.
- Open the sachet carefully and use the solution according to the instrument manual.
- Follow the manufacturer’s calibration procedure and temperature requirements.
- Avoid contaminating the sachet or transferring used solution back into the original package.TDS Calibration Solution
- Discard used solution after calibration; do not reuse it for subsequent calibration.
- Close and store the instrument according to its instructions after calibration is complete.
For best results, use clean equipment and follow the calibration frequency recommended by the meter manufacturer.TDS Calibration Solution
Storage and Handling
Store unopened sachets under the conditions specified by Hanna Instruments. Check the expiration date before use and avoid using sachets that are damaged, leaking, or expired. Once opened, a sachet is intended for single use. Do not return used solution to its original container or retain it for future calibration.

Why Choose Hanna TDS Calibration Solution HI70038P?
The Hanna HI70038P offers a defined TDS reference value, individually sealed packaging, NIST traceability, and a temperature reference chart. These features make it a practical calibration accessory for compatible TDS instruments in laboratory and field environments.TDS Calibration Solution
Bright Scientific Co. supplies scientific instruments, laboratory chemicals, calibration solutions, glassware, and laboratory consumables in Bangladesh. Contact Bright Scientific Co. for product availability and pricing.TDS Calibration Solution
Frequently Asked Questions (FAQ)
1. What is Hanna HI70038P?
Hanna HI70038P is a TDS calibration solution with a reference value of 6.44 g/L (ppt) at 25°C.
2. What is the package size?
The product contains 25 individual sachets, each holding 20 mL of solution.TDS Calibration Solution
3. Which TDS meters can use this solution?
It is intended for compatible TDS meters that specify a 6.44 g/L (ppt) calibration standard. Always verify compatibility in the instrument manual.
4. Is Hanna HI70038P NIST traceable?
Yes. The manufacturer describes the solution as NIST traceable and explains its standardization process on the official product page.
5. What is the shelf life?
Hanna states that unopened sachets have a shelf life of five years from the date of manufacture. Always check the expiration date printed on the sachet.TDS Calibration Solution
6. Can an opened sachet be reused?
No. The sachets are designed for single use. Discard the remaining solution after use to reduce contamination risk.
7. Why is calibration important for TDS meters?
Calibration helps ensure that a meter provides measurements consistent with an appropriate reference standard and the instrument’s specifications.
8. Where can I buy Hanna HI70038P in Bangladesh?
Contact Bright Scientific Co. for current availability, pricing, and delivery information. TDS Calibration Solution







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