ISO 8760:1990

Name: ISO 8760:1990 — Work-place air — Determination of mass concentration of carbon monoxide — Method using detector tubes for short-term sampling with direct indication
SKU: ISO 8760:1990
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Work-place air — Determination of mass concentration of carbon monoxide — Method using detector tubes for short-term sampling with direct indication

Название (английский):

ISO 8760:1990

Work-place air — Determination of mass concentration of carbon monoxide — Method using detector tubes for short-term sampling with direct indication

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 6
Дата публикации:: 15 февраля 1990 г.
Издание:: ISO IS 8760 edition 1 version 1
ICS:: 13.040.30

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Описание (английский):

Specifies a method for concentrations greater than 10 mg/m^3. The method is suitable for personal, breathing-zone sampling as well as for the general area sampling. Information on performance characteristics is given. In applications requiring better precision or freedom from interferences, the use of classical chemical or instrumental methods is recommended.

Abstract

Похожие стандарты

Упомянутые в описании и другие стандарты ISO

Overview

ISO 8760:1990 specifies a short-term, direct-indication method for determining the mass concentration of carbon monoxide (CO) in workplace air using detector tubes. The procedure is intended for concentrations greater than 10 mg/m3 and is suitable for both personal (breathing‑zone) and general area sampling. The standard describes reagents, sampling procedure, performance characteristics and when to prefer more precise chemical or instrumental methods.

Key topics and technical requirements

Detector tube chemistry: Two common reagent systems are covered - iodine pentoxide (white → green‑brown stain) and potassium palladosulfite (yellow → brown stain).

Interferents: Lists substances that affect readings (e.g., acetylene, aliphatic and halogenated hydrocarbons; carbon disulfide, halogens, mercaptans, phosphine, phosgene; acetylene and H2S can produce black stains). Some interferents can be removed by pretreatment sections.

Sampling apparatus: Use manufacturer‑matched detector tube and detector‑tube pump (hand or battery‑operated). Pump volume per stroke must be within ±5% of nominal; test for leaks and flow blockages before use.

Sampling procedure: Break tube ends, insert tightly into pump, perform prescribed number of strokes, flush pump after sampling, compare stained tube against an unused tube on white background for reading.

Calibration and correction: Calibration data should be supplied by the manufacturer. Correction factors for pressure, temperature and relative humidity (and known interferents) must be applied when necessary. Recalibration by users is permitted only with trained personnel and controlled gas mixtures.

Precision & limits: Detector‑tube measurements have larger relative errors at lower concentrations; maximum permissible random error is stated (for example, ±25% at 60 mg/m3). The method is optimized for quick screening rather than high‑precision quantification.

Safety & disposal: Follow manufacturer guidance and local regulations for disposal of tubes containing toxic or corrosive reagents.

Applications and users

ISO 8760:1990 is practical for:

Occupational hygienists and industrial safety professionals conducting quick workplace CO exposure checks

Field technicians performing short‑term, on‑site breathing‑zone monitoring

Environmental health officers doing rapid area screening where immediate results are needed

Use this standard when rapid, portable CO assessment is required; for regulatory compliance, long‑term monitoring or situations needing high accuracy or interference‑free results, use classical chemical or instrumental methods.

ISO 8760:1990

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications and users

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