Stack Testing Costs UK — Pricing Guide

Updated 23 July 2026

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UK MCERTS stack emissions testing typically costs £2,500–£4,000 per stack per day for standard combustion-gas programmes, plus mobilisation of £500–£1,500 and laboratory analysis of £150–£1,200 per pollutant. Multi-stack, isokinetic, metals and dioxin programmes are quoted as fixed-fee packages.

How UK stack testing is priced

A UK MCERTS stack test is priced as three separate components: mobilisation (getting a UKAS-accredited team, calibrated instruments and consumables to your site), on-stack sampling (technician days, isokinetic trains, analysers, ports and access) and laboratory analysis and reporting (accredited chemistry, QC, MCERTS-format reports and EA submission). Split quotations should show each of these so you can compare providers like for like — a headline day-rate alone hides the real cost.

Indicative ranges (UK, 2026)

These are typical fixed-fee ranges for accredited work under UKAS Lab 24303. Actual quotations depend on the parameters below.

Mobilisation: £500–£1,500 per campaign (higher for Scottish Highlands, Northern Ireland and offshore)
Standard combustion-gas stack day (NOx, SO₂, CO, O₂, flow, temperature, moisture): £2,500–£3,500 per stack per day
Isokinetic particulate stack day (BS EN 13284-1, single point): £3,000–£4,000 per stack per day
Metals and mercury (BS EN 14385, isokinetic + lab): £3,500–£5,500 per stack per day plus lab analysis
Dioxins / furans (BS EN 1948, long-duration sampling): £6,000–£9,000 per stack per day plus specialist lab analysis
TOC / VOC by FID (BS EN 12619): £2,500–£3,500 per stack per day
Speciated VOC by FTIR: £3,000–£4,500 per stack per day
Pre-submission QA review by former EA officer: included as standard on all MCERTS reports
Urgent / weekend mobilisation surcharge: +15–25%

Worked example 1 — single MCP boiler, annual compliance

One medium combustion plant (2 MW gas boiler) requiring annual monitoring of NOx, SO₂, CO, O₂ and flow to satisfy the MCP Directive.

Mobilisation: £750
One stack day (combustion gases): £2,800
Reporting, QA review and EA-format output: included
Indicative total: £3,550 + VAT

One energy-from-waste line with particulates, HCl, HF, SO₂, NOx, CO, TOC, NH₃, metals and dioxins (typical IED Chapter IV scope).

Mobilisation: £1,200
Combustion gases, HCl / HF, NH₃ by FTIR — 1 stack day: £3,200
Isokinetic particulates (EN 13284-1) — 1 stack day: £3,400
Isokinetic metals (EN 14385) — 1 stack day: £4,200 + lab £900
Dioxins (EN 1948) — 1 stack day: £7,500 + lab £1,600
Reporting bundle for IED reporting: included
Indicative total: £22,000 + VAT (single-line campaign)

A manufacturing site with 4 stacks (VOC abatement outlets), each requiring TOC by FID and speciated VOCs by FTIR twice a year under the site's bespoke Environmental Permit.

Mobilisation: £1,000 (single mobilisation, all four stacks in one visit)
4 × TOC + speciated VOC stack days: 4 × £3,600 = £14,400
Reporting per stack + combined compliance summary: included
Indicative total per campaign: £15,400 + VAT (~£30,800/year for the biannual programme)

Additional pollutants — each extra parameter adds analyser time or lab charges
Isokinetic sampling (particulates, metals, dioxins) requires slower, longer runs
Working at height, confined-space entry or rope-access requirements
Non-compliant EN 15259 sample locations — extra ports or scaffolding may be needed
Short-notice or permit-deadline urgency (weekends, night shifts)
Remote locations (Highlands, offshore, NI) — travel, ferries, overnight subsistence
Multiple lines or stacks tested sequentially rather than in parallel

Multi-stack campaigns tested in a single mobilisation
Annual or multi-year contracts with fixed pricing
Combining periodic testing with QAL2 / AST visits under one mobilisation
Booking two or more months ahead (Alkali offers advance-booking savings on selected services)
Providing permit, drawings and RAMS early so scope can be right-first-time
Pre-visit sample-point checks to avoid abort or repeat mobilisation

A quote that does not itemise the following almost always hides variable charges. Ask any provider to show them explicitly.

Named pollutants and reference method for each
Number of stacks, sample points and test runs per pollutant
Mobilisation, technician days and lab analysis broken out
Report format (MCERTS-standard, EA template, IED reporting) and turnaround
Whether pre-submission QA review by a senior reviewer is included
Post-submission support window (Alkali provides 14 days as standard)
Any surcharges for weekends, urgency, travel or scaffolding

Upload your permit, monitoring schedule and stack details to our online quote request. A senior stack testing consultant will return a written, itemised fixed-fee quotation within 24 working hours — under UKAS Lab 24303. If you are still comparing providers, our guide to choosing a UK stack testing company walks through what to compare on a like-for-like basis.

Frequently Asked Questions

How much does MCERTS stack emissions testing cost in the UK?

Typical UK MCERTS stack testing costs £2,500–£4,000 per stack per day for standard combustion-gas parameters (NOx, SO₂, CO, O₂, flow, moisture), plus £500–£1,500 mobilisation. Isokinetic particulates, metals and dioxins are charged as fixed-fee packages — often £4,000–£9,000 per stack per day plus laboratory analysis. Alkali issues written, itemised fixed-fee quotations under UKAS Lab 24303.

Are stack testing quotes fixed-price or estimates?

Alkali issues fixed-fee written quotations that itemise mobilisation, stack days, laboratory analysis and reporting. Day-rate 'estimate' quotations can drift mid-campaign and are harder to compare between providers. Always ask for a fixed-fee scope in writing.

Is laboratory analysis included in a stack testing quote?

It should be. Alkali's fixed-fee quotations always include the UKAS-accredited laboratory analysis needed for the pollutants specified. Ambiguous 'per pollutant' pricing without a lab line is a common source of surprise invoicing.

What triggers a mobilisation surcharge?

Weekend or night-shift work, sub-48-hour urgency, remote UK locations (Highlands, offshore, Northern Ireland) and any scaffolding or rope-access requirements typically add 15–25% to the mobilisation cost. All surcharges are quoted upfront.

Can I reduce stack testing cost by combining services?

Yes. Combining periodic MCERTS testing with QAL2 / AST calibration, or testing multiple stacks in a single mobilisation, materially reduces cost per parameter. Multi-year contracts and advance-booking savings are available for selected services when booked at least two months ahead.

Get a fixed-fee MCERTS stack testing quote online

Add the services you need, upload your permit conditions, and Alkali will review the scope and respond with a clear proposal — no phone tag, no email chains. A former Environment Agency officer reviews every brief for accuracy before pricing.