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A 500 µS/cm standard is the “sweet spot” for several specific environmental and industrial sectors:
Drinking Water Quality: Most tap water falls between 50 and 800 µS/cm. This solution is perfect for calibrating meters used by city water technicians or home filtration testers.
Environmental Monitoring: Used to test the health of rivers, lakes, and streams. Significant deviations from a baseline measurement can indicate runoff or pollution.
Hydroponics: Many leafy greens (like lettuce or spinach) thrive in nutrient solutions near this conductivity range.
Cooling Towers: Used to monitor mineral buildup in industrial cooling systems to prevent scaling.
Because conductivity is a measure of ion mobility, temperature is the most critical variable.
The 25°C Benchmark: The 500 µS/cm rating is only accurate at exactly 25°C.
Temperature Correction: Most solutions come with a Correction Table on the bottle. If your room temperature is 20°C, the actual reading should be approximately 450 µS/cm; if it is 30°C, it should be roughly 550 µS/cm.
Automatic Temperature Compensation (ATC): If your meter has ATC, it will sense the temperature and automatically “math” the reading back to what it would be at 25°C.
Cross-Contamination: This is a relatively low-value standard. Even a tiny drop of sweat or tap water can significantly change the 500 µS/cm value. Always rinse your probe with distilled water and blot it dry before inserting it into the calibration sample.
Single-Use Policy: Once you pour a sample of the standard into a small beaker for calibration, never pour it back into the main bottle. Discard it to ensure the bulk supply remains pure.
Carbon Dioxide Absorption: Over time, CO₂ from the air dissolves into the solution, forming weak carbonic acid which adds ions and slowly increases the conductivity. Keep the bottle tightly sealed when not in use.
TINDAKAN PENCEGAHAN UNTUK PENANGANAN YANG AMAN
Untuk tindakan pencegahan, lihat bagian 2.2 dalam SDS.
KONDISI PENYIMPANAN YANG AMAN, TERMASUK KETIDAKCOCOKAN
a. Kondisi penyimpanan
Tertutup rapat.
Suhu penyimpanan : Rekomendasi suhu penyimpanan lihat pada label
b. Kelas penyimpanan
Kelas penyimpanan (TRGS 510): 12: Cairan Tidak Mudah Terbakar
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