Frontline Safety 58L 25PPM H2S / 100PPM CO / 2.2% CH4 / 18% O2 / N2 Calibration Gas
Frontline Safety 58L 25PPM H2S / 100PPM CO / 2.2% CH4 / 18% O2 / N2 Calibration Gas

Product Code - 8A-4N83-FR

exc VAT £197.00 inc VAT £236.40
Description / Features / Spec


Frontline Safety 58L 25PPM H2S / 100PPM CO / 2.2% CH4 / 18% O2 / N2 Calibration Gas

Calibrate your portable gas detectors with this 58L calibration gas cylinder from Frontline Safety. It contains 25 ppm hydrogen sulfide (H2S), 100 ppm carbon monoxide (CO), 2.2% methane (CH4) and 18% oxygen (O2) with a balance in nitrogen (N2). You will also require a 715 regulator, DFR 2000 regulator or trigger with the connection being a 5/8" x 18 thread depending on the instrument you will be calibrating.


Please contact us on +44 (141) 771 7749 if you wish to order this for despatch out with the United Kingdom. Orders placed and completed via the website may be subject to additional delivery costs upon receipt of order.

Key Features


8AL Cylinder Specifications    
Contents 58 litres  

Service Pressure

500 psig/34.5 bar  


14.25" x 3.5"
362 mm x 89 mm


Natural Aluminum  
Minor Components are certified to the following analytical accuracy  
  51 - 300 ppm ±2%
  21 - 50 ppm ±5%
  2 - 20 ppm ±10%
Warranty LEL Mixtures and Non-Reactive Mixture 36 months
  H2S, SO2, and H2S/CO/LEL/O2/N2, mixtures 24 months
  NO, NH3, PH3, and HCN Mixtures 18 months
  Cl2 Mixtures 9 months
  HCL Mixtures 12 months
  NO2 Mixtures 6 months


The 2AL, 8AL and 6D cylinders, with patented “one fill” valve meet European Standards EN 12205
requiring that all non-refillable cylinders be fitted with a one way valve to prevent refilling.



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UK Mainland Standard Delivery on orders under £75 ex VAT - £5.95 ex VAT*
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Channel Island Delivery - £40 ex VAT
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International Delivery Options

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Should you wish to cancel an order or return unwanted goods please follow the procedures detailed below to help us ensure cancellations/returns are processed as quickly and efficiently as possible.

Simply log on to your customer account, note the order reference number and email the full cancellation details to [email protected] or contact us on 0844 550 0001. Assuming the order has not been despatched we will cancel.

You have the right to cancel the purchase of goods without having to give a reason at any time within the “cooling off period” of seven working days, beginning the day after you take delivery of your order.

You must notify us of your cancellation in writing via email to customer[email protected] or to our contact address. (Details Here)

If you are in possession of the goods you are under the duty to retain them and take reasonable care of them.

You must send the goods back to us in their original condition to our contact address at your own cost (unless we delivered the item to you in error or the item is damaged or defective) as soon as possible once you have cancelled the contract.

Alternatively we will collect the goods from you which will incur a charge no greater than the actual cost of arranging the collection and shipping. In this case you must make the goods available for collection. We will contact you to make further arrangements.

We reserve the right to make a charge not exceeding our direct costs of recovering the goods if you do not return the goods or return them at our expense.

Upon receipt of returned items in satisfactory condition we will arrange a full credit by the same method used to pay for the goods originally. Any credit due will be processed within a maximum of thirty days.

Note: If you wish to return goods for refund or exchange after 14 days, a re-stocking fee of 20% of the full order total will apply.

If upon receipt of goods you find them to be faulty, damaged or if you have been incorrectly supplied an item, you should notify us within 24 hours by contacting 0844 500 0001 or [email protected] and quoting your order number and contact details.

Frontline Safety will arrange uplift of any damaged or wrongly received goods and if on inspection of goods we also find them to be damaged, faulty or incorrectly supplied, we will offer replacement goods or provide a full refund.

We recommend you inspect all goods prior to signing for and accepting delivery. If there is any visible damage to the outer packaging, ensure goods are sign for as damaged. In instances where it isn’t possible to sign for goods as damaged, these should be signed for as unexamined.

Note: If your goods happen to develop a fault out with the standard returns period but within supplied warranty period or if you require any additional assistance, please contact us on 0844 550 0001 or email [email protected]


All postage, handling, customs and duty charges for all returned goods are the responsibility of the customer. We recommend using a fully traceable, insured service as goods are your responsibility while in transit.