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RAD171 Supelco

radiello Methylene Blue Calibration Standard for H2S (Hydrogen Sulfide)

pkg of 100 mL

  •  NACRES NB.24



Related Categories Additional Standards, Air Monitoring Standards, Analytical Standards, Analytical/Chromatography, Chromatography,
packaging   pkg of 100 mL
Featured Industry   Environmental
format   neat


General description

The H2S calibration standard contains a methylene blue concentrate that, once diluted 1:50 (v/v) with water, provides the same absorbance value of hydrogen sulfide at 665 nm at a concentration of 1.145 μg/mL sulfide ions. This concentration value is the highest absorbance value within the linear range of the spectrophotometer and can be used as a stock solution to prepare standards for the calibration curve. The concentrate is suitable for preparing up to 50 calibration curve and is stable for at least 1 year.

Legal Information

radiello is a trademark of Institi Clinici Scientifici Maugeri



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Methylene blue    
Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable


Certificate of Analysis (COA)

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Protocols & Articles


Calibration Solutions and Kits for radiello® Diffusive Air Sampler

In 2006, Supelco, a member of the Sigma-Aldrich family, in collaboration with the Institi Clinici Scientifici Maugeri (ICSM), Padova, Italy, partook in a joint venture in which Supelco became the exc...
Klaus Buckendahl
Analytix Volume 6 Article 5
Keywords: Passive sampling, Sample preparations

Frequently Asked Questions - radiello® Products

The extra storage tubes are just proposed for reusable tubes (RAD145 for instance) and for replacing glass tubes that could get broken. If you are in the field and you break a storage tube or lose it...
Keywords: Adsorption, Detergents, Diffusion, Diffusive sampling, Fermentation, PAGE, Reductions, Sample preparations, Size-exclusion chromatography, Solvents, Sonication

radiello® Diffusive Air Sampling Application - Hydrogen Sulfide

White diffusive body Product No. RAD120 Supporting plate Product No. RAD121 Vertical adapter Product No. RAD122 (optional) Chemiadsorbing cartridge Product No. RAD170
Keywords: Sample preparations, Titrations

Peer-Reviewed Papers


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