Understanding the Difference Between Eyewash Units and Full Safety Showers
When someone asks for a portable safety shower, the first and most important question is: what level of emergency response is actually required?
Not all portable units are designed to meet full Safety Shower standards. Some are built specifically for eye and face irrigation, while others are engineered to deliver compliant full-body drenching. Understanding the difference protects both compliance and people.
The SE590A Portable Eye & Body Wash – What It’s Designed To Do
The SE590A range (45L and 106L models) are self-contained, pressurised units primarily designed for eye and face irrigation.
What it does well:
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Meets eyewash requirements of 1.5 litres per eye per minute for 15 minutes
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Eyewash function is compliant with AS 4775
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Ideal for immediate first response in remote, mobile, or temporary work areas
Important limitations:
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Body spray runs for approximately 8 minutes only
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Flow rate and duration do not meet full Safety Shower requirements
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Cannot deliver the minimum 76 L/min required for compliant safety shower performance
How it should be used:
The SE590A Body Wash is considered supplementary emergency equipment, not a replacement for a compliant safety shower. It is suitable for:
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Immediate first response while transferring the injured person to a compliant shower
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Low-risk environments where a full safety shower is not reasonably practicable
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Temporary or mobile sites where eye exposure is the primary hazard
It is a highly effective eyewash solution — but it is not engineered for full-body chemical immersion incidents.
When a Full Safety Shower Is Required
Where there is a risk of chemical exposure to the body, Australian Standards require a dedicated safety shower capable of delivering:
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Minimum 76 litres per minute
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Sustained flow for at least 15 minutes
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Hands-free operation
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Immediate activation
In these scenarios, tank-based or engineered systems become essential.
Portable Safety Shower Options That Meet the Requirement
1️⃣ Tank-Based Safety Shower & Eye Wash Systems (SE TSS Range)
These systems use a dedicated water tank with a pump system to deliver compliant flow.
Key benefits:
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Can meet full Safety Shower and Eyewash requirements
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Suitable for construction sites, remote works, and temporary projects
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No reliance on mains pressure
They are commonly used where permanent plumbing is unavailable but full compliance is required.

2️⃣ Gravity-Fed Low-Flow Safety Shower & Eye Wash Systems
These systems rely on a large water tank (typically 2,500–3,000 litres) mounted 3–5 metres above the shower inlet.
Why height matters:
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Elevation creates sufficient head pressure
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Allows compliant flow without pumps
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Provides consistent performance in remote locations
Gravity-fed systems are widely used on mine sites and long-term remote projects where infrastructure is limited.
Can a Standard Hose Run a Safety Shower?
This is one of the most common misconceptions — and the answer is no.
Safety showers typically require:
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A 25mm water feed
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Demand of 100–130 litres per minute, depending on the model
A standard garden or site hose simply cannot maintain the required flow or pressure. Relying on a hose-fed setup risks non-compliance and, more importantly, ineffective decontamination during a real emergency.
So, Which Option Is Right?
Eye exposure risk only?
A portable eyewash unit like the SE590A may be suitable as primary or supplementary equipment.
Body splash or chemical immersion risk?
A tank-based or gravity-fed safety shower system is essential.
Temporary or remote site?
Portable tank or elevated gravity systems provide compliant solutions without permanent plumbing.
Final Takeaway
Portable safety equipment is not one-size-fits-all. Understanding what each unit is designed to do — and what it is not designed to do — is critical for both compliance and worker safety.
The safest approach is simple: assess the hazard first, then select equipment that genuinely meets the required performance standard — not just what appears portable on paper.
Any questions, reach out and let the team at Big Safety help your compliance needs.

