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Wholesale Electronic helium Manufacturer, Manufacturers

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Product Description

Standard Specifications: Grade 5.0 High Purity Helium (≥ 99.999% Purity Level).
Item Technical Property
High purity helium
Helium He purity (volume fraction)/10-2 ≥ 99.999
Neon (Ne) content (volume fraction)/10-6 ≤ 4
Hydrogen (H2) content (volume fraction)/10-6 ≤ 1
Oxygen (O2) content (volume fraction)/10-6 ≤ 1
Argon (Ar) content (volume fraction)/10-6 ≤
Nitrogen (N2) content (volume fraction)/10-6 ≤ 2
Carbon monoxide (CO) content (volume fraction)/10-6 ≤ 0.5
Carbon dioxide (CO2) content (volume fraction)/10-6 ≤ 0.5
Methane (CH4) content (volume fraction)/10-6 ≤ 0.5
Water H2O content (volume fraction)/10-6 ≤ 3
Total magazine content/10-6 ≤ 10
Frequently Asked Questions (FAQ)
What purity classification does 99.999% Helium represent?
A volume fraction purity of ≥ 99.999% corresponds to Grade 5.0 (5N) High Purity Helium, ensuring minimal contamination for critical analytical and laboratory applications.
What does the volume fraction unit 10⁻⁶ indicate in this specification?
The unit 10⁻⁶ denotes parts per million (ppm) by volume. It specifies the maximum allowable trace impurity volume per million units of gas.
What is the combined threshold for Oxygen (O₂) and Argon (Ar)?
As outlined in the technical property table, Oxygen (O₂) and Argon (Ar) contents are strictly controlled to a shared ceiling limit of ≤ 1 × 10⁻⁶ (1 ppm).
What is the maximum allowable moisture (H₂O) content?
The moisture/water (H₂O) content must not exceed 3 × 10⁻⁶ (3 ppm), which is crucial for preventing system freezing and chemical interference in cryogenic or chromatographic environments.
What is the allowable limit for carbon contaminants (CO, CO₂, CH₄)?
Carbon monoxide (CO), Carbon dioxide (CO₂), and Methane (CH₄) are each individually restricted to an extremely low concentration of ≤ 0.5 × 10⁻⁶ (0.5 ppm).
What is the overall total impurity (magazine) limit for this grade?
The cumulative total magazine (impurity) content across all trace elements cannot exceed 10 × 10⁻⁶ (10 ppm), guaranteeing consistent high-grade output.

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