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Viperdet MS Downline

Viperdet MS Downline


Updated: January 21, 2024
Surface, Underground

Product Description

Viperdet MS non-electric downline assemblies consist of a specific length of yellow shock tube, with a high-strength delay detonator crimped to one end and closed at the other end by an ultrasonic seal. A colour coded label marked with the specified delay is attached to the shock tube within 10cm of the seal.


Viperdet MS Downline is used as a in-the-hole detonator for the initiation of explosives in surface and underground mines, quarries, and construction blasting.
Viperdet MS non-electric detonators must not be used in flammable environments such as methane or coal dust.
Viperdet MS non-electric detonators are safe against extraneous electric currents except lightning.

Product Specifications

Detonator strength: No. 8.
Shock tube: Triple extruded polyethylene exterior over surlyn inner.
Shell: Aluminium.
Elongation: 140%.
Tensile Strength: Minimum 80N.
Delay timing: 350ms or 500ms.
Nominal VOD of shock tube: 2000 m/s.
Resistance to hydrostatic pressure:  48 hrs at 1 MPa.

Guidelines for Use

Priming and Initiation

Viperdet MS Downline can be used to prime the full range of BME’s detonator-sensitive explosive products.
Viperdet MS Downline detonators can be sequentially delayed and initiated by Viperdet Trunklines.
Viperdet MS Downline can also be initiated by a single strand of detonating cord with a minimum core load of 5 g/m.

To prevent a snap, slap, and shoot incident (unexpected detonation) never pull or stretch non-electric shock tube to the point of breaking.

Ground Temperature
This product may be used in ground temperatures up to a maximum of 65°C (150°F). If the application requires use outside of this temperature range please contact a BME Technical Representative for additional guidance.

Sleep Time
The maximum in-hole sleep time is 28 days. If the application requires longer in-hole sleep time, please consult with a BME Technical Representative for guidance.

Shelf life
36 months from the date of production. Store under recommended conditions.

Storage conditions
Minimum storage temperature (- 45°C) and maximum storage temperature (+65°C). The product should be stored in its original packaging.

Disposal of expired non-electric detonators and its packaging should conducted of by authorized personnel and/or companies.


Units are placed in plastic inner packaging that is heat-sealed and packed in boxes.
Other lengths are available on request.

2 m400
4 m300
6 m200
8 m180
10 m150
12 m120
15 m100
18 m80
21 m50
24 m50

UN Classification for Transportation and Storage

Proper shipping name
Detonator assemblies, non-electric.


1.1B (UN 0360).
1.4B (UN 0361).
1.4S (UN 0500).

Safe Use

  • Never fight explosive fires.
  • Refer to Safety Data Sheet (SDS) for first aid information.
  • All explosives must be transported and stored in accordance to relevant regulations.
  • All explosives are classified as dangerous goods and may cause damage to property, personal harm, or death, if not used correctly.
  • Always keep products away from sources of heat, sparks, flame or hot surfaces and avoid mixing with combustibles or incompatible materials.

In case of emergencies, click here to contact our team for assistance.


All rights reserved. To the maximum extent permitted by law.

Omnia disclaims all liability whatsoever, whether arising in contract, delict (including negligence) or otherwise in relation to the use of any products/solutions or services and all implied warranties, terms and conditions relating to the products/solutions or services (whether implied by statue, common law or otherwise), including (without limitation) any warranty, term or condition as to accuracy, completeness, satisfactory quality, performance, fitness for purpose or any special purpose, non-infringement, information accuracy, as between Omnia and you, are hereby excluded. Omnia specifically disclaims liability and will not be responsible for, any liability or damages, howsoever arising, resulting from the use or reliance upon the information in this document.

You assume sole responsibility for results obtained from the use of the products/solutions or services, and for conclusions drawn from such use.

© Omnia Group (Pty) Ltd

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