---
title: "BOC Carbon Dioxide Regulator Multi Stage 4 Bar – Series 8500 CO₂ Regulator (BS EN ISO 2503)"
id: "20446"
type: "product"
slug: "boc-carbon-dioxide-regulator-multi-stage-4-bar"
published_at: "2025-10-06T12:48:05+00:00"
modified_at: "2025-10-06T13:36:50+00:00"
url: "https://sglonline.co.uk/product/boc-carbon-dioxide-regulator-multi-stage-4-bar/"
markdown_url: "https://sglonline.co.uk/product/boc-carbon-dioxide-regulator-multi-stage-4-bar.md"
excerpt: "The BOC Carbon Dioxide Regulator Multi Stage 4 Bar (Series 8500) is a precision-engineered CO₂ regulator designed for sensitive laboratory, industrial, and research applications. Offering continuous, accurate, and stable gas flow, it is ideal for incubation, autoclaving, and freezer back-up..."
taxonomy_product_brand:
  - "BOC"
taxonomy_product_type:
  - "simple"
taxonomy_product_cat:
  - "CO2 Regulators"
---

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[CO2 Regulators](https://sglonline.co.uk/product-category/gas-equipment/gas-regulators/co2-regulators/)

# BOC Carbon Dioxide Regulator Multi Stage 4 Bar – Series 8500 CO₂ Regulator (BS EN ISO 2503)

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£180.00£216.00 Exc VATInc VAT

Collection or Next Day Delivery Available. Dispatches in:

SKU: 86764Category: [CO2 Regulators](https://sglonline.co.uk/product-category/gas-equipment/gas-regulators/co2-regulators/)
Brand: [BOC](https://sglonline.co.uk/brand/boc/)

- [Description](#tab-description)
- [Reviews (0)](#tab-reviews)

The **BOC Carbon Dioxide Regulator Multi Stage 4 Bar (Series 8500)** is a **precision-engineered CO₂ regulator** designed for **sensitive laboratory, industrial, and research applications**. Offering **continuous, accurate, and stable gas flow**, it is ideal for **incubation, autoclaving, and freezer back-up systems** where reliability and pressure consistency are essential.

This **multi-stage carbon dioxide regulator** maintains a constant outlet pressure even as cylinder pressure drops, ensuring smooth and controlled gas delivery. Manufactured to **BS EN ISO 2503** and fitted with gauges conforming to **BS EN ISO 5171**, it meets the highest safety and performance standards required for professional gas control systems.

The **robust brass body**, precision components, and clearly marked dual gauges make the regulator easy to operate, providing accurate readings for both cylinder and outlet pressures. Its **multi-stage design** guarantees consistent performance across long periods of use, making it suitable for critical applications.

**Key Features:**

- **Multi-stage CO₂ regulator** for precise and stable gas control
- Ideal for **incubation, autoclaving, and freezer back-up**
- Provides **continuous outlet pressure** as cylinder pressure decreases
- Built to **BS EN ISO 2503** and **BS EN ISO 5171** standards
- **Outlet connection:** 3/8” RH
- **Inlet connection:** BS341 No. 8 (0.860 Whit)
- **Gas Component:** Carbon Dioxide
- **Regulator Stage:** Multi
- Suitable for **industrial and laboratory environments**
- Manufactured by **BOC**, trusted for high-quality gas control solutions

**Applications:**

- Freezer back-up (10 bar and 4 bar models)
- Incubation (4 bar and 2 bar models)
- Autoclaving (4 bar only)
- Modified atmosphere and sample storage systems

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