Alkaline Range Precision: Inorganic Ventures pH 9.18 Calibration Standard (Colorless) – Multiple Sizes
Calibrate your pH instruments with confidence in the alkaline range using the Inorganic Ventures pH 9.18 Calibration Standard. This high-purity, colorless buffer solution is a certified reference material (CRM) meticulously prepared for laboratory professionals who require accurate and reproducible results. This single description covers the 250mL, 500mL, and 1L sizes, all benefiting from Inorganic Ventures' leading Transpiration Control Technology (TCT) for an impressive 5-year shelf life from the date of manufacture when stored in the sealed TCT bag.
Formulated with Sodium Tetraborate Decahydrate (Borax) in a stable water matrix, this pH 9.18 standard is manufactured by Inorganic Ventures, a globally recognized leader in analytical standards. Production strictly adheres to ISO 17034 (Reference Material Producer) and ISO 17025 (Testing and Calibration Laboratories) accreditations. This dual certification ensures the highest quality, consistency, and reliability. Furthermore, this buffer is fully traceable to NIST Standard Reference Materials (SRMs), crucial for laboratory quality control and meeting stringent accreditation requirements.
The advanced Transpiration Control Technology (TCT) packaging protects the standard's integrity, ensuring it remains accurate throughout its extended shelf life. While the sealed TCT bag provides up to 5 years of stability, once opened, the buffer is typically valid for one year. Due to the nature of alkaline buffers, it's particularly important to keep the bottle tightly sealed after opening to minimize CO2 absorption from the atmosphere.
Key Features & Benefits for the Lab Professional:
- Accurate Alkaline Calibration: Precisely formulated to pH 9.18 (refer to specific Certificate of Analysis for exact value and uncertainty, typically ±0.01-0.02 @ 25°C).
- Extended 5-Year Shelf Life: TCT packaging ensures long-term stability and value when stored in the sealed bag.
- NIST Traceable: Provides full confidence in your calibration results and supports regulatory compliance.
- ISO 17034 & ISO 17025 Certified: Manufactured and tested to the highest international quality standards for CRMs.
- High-Purity Composition: Made with Sodium Tetraborate Decahydrate (Borax) in a water matrix.
- Clear, Colorless Solution: Ensures no dye interference in your measurements.
- Convenient Sizes Available: This description covers the following product codes:
- 250mL (Product Code: PH-9.18-250ML)
- 500mL (Product Code: PH-9.18-500ML)
- 1 Liter (Product Code: PH-9.18-1L)
Typical Laboratory Applications:
- Two-point or multi-point calibration of pH meters and electrodes, especially for measurements in the alkaline range.
- Verification and performance checks of pH analytical systems.
- Essential quality control (QC) standard in diverse industries including environmental analysis, water treatment, chemical manufacturing, and research laboratories.
Choose the Inorganic Ventures pH 9.18 Calibration Standard for reliable and accurate pH measurements in the alkaline range. Select the volume that best suits your laboratory's needs and benefit from the quality and extended shelf life offered by a premier CRM provider.









