Stack testing UK — independent MCERTS and UKAS-accredited stack emissions testing, periodic stack monitoring, QAL2/AST CEMS calibration and Environment Agency reporting for industrial operators, waste sites, energy plant and permit-holders across England, Scotland, Wales and Northern Ireland. Our stack testing team delivers to ISO 17025, MCERTS Performance Standard for Organisations and the full suite of EN methods (EN 15259, EN 14181, EN 15267) — with regulator-ready reports written for Environment Agency, SEPA, NRW and NIEA scrutiny, fixed-fee scoping within 24 hours, and priority slots for permit deadlines. Stack testing quotes, stack test bookings and QAL2/AST scheduling all run through a single senior stack testing consultant so nothing gets lost between site work and reporting.
Alkali Environmental is an independent UK stack testing company delivering MCERTS stack emissions testing, periodic stack emissions testing, QAL2 and AST CEMS calibration, CEMS hire and Environment Agency reporting for permit holders across England, Scotland, Wales and Northern Ireland. Every stack test is delivered to ISO 17025, MCERTS Performance Standard for Organisations (PSO) and the relevant EN methods (EN 15259, EN 14181, EN 15267) — with senior stack testing consultants on site and regulator-ready reporting for Environment Agency, SEPA, NRW and NIEA scrutiny.
Booking a stack test with Alkali means fixed-fee scoping within 24 hours, priority slots for permit deadlines, and one senior contact from stack test quote to final report. See how we compare to other UK stack testing companies or request a stack testing quote.
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CEMS hire UK: short-term continuous emissions monitoring systems for outage cover, commissioning and parallel-test evidence.
COSHH Air Monitoring monitors workplace air to assess exposure to hazardous substances and ensure compliance.
H1 stack height assessments using EA D1 screening and dispersion modelling to determine optimal chimney heights for permit compliance.
Landfill Trace Gas Monitoring measures low-level landfill gases to ensure long-term environmental safety.
MCERTS & UKAS stack emissions testing UK-wide — fixed-fee quote in 24 hrs. Regulator-ready reports for Environmental Permit compliance. UKAS Lab 24303. 0800 098 2610.
EN 14181 QAL2 calibration and Annual Surveillance Testing (AST) of CEMS by a UKAS-accredited Test Laboratory. Regulator-ready reports.
Operator Monitoring Assessment support to improve OMA scores through MCERTS gap analysis, QA/QC systems and EPR competency for permitted sites.
Siloxane Monitoring detects and quantifies harmful siloxanes in biogas to protect engine performance.
A former Environment Agency officer or senior MCERTS tester reviews your Environmental Permit and responds within one working day with a plain-English summary of the monitoring, modelling and reporting obligations — plus a fixed-fee quote if you want one. No charge. No obligation.
UK operators choose Alkali when they need a stack emissions testing partner whose accreditation, team and methodology can be independently verified — every claim below is a published, checkable fact backed by UKAS Lab No. 24303, former Environment Agency officers and audit-ready MCERTS reporting.
Alkali is an independent UK laboratory combining UKAS / MCERTS technical capability with online quote requests, fixed-fee scopes, early-booking discounts for selected services booked at least two months in advance, automated reporting workflows and direct access to senior technical staff.
Our UKAS testing laboratory number is on the homepage, footer, every service page and our schema. Buyers can verify our exact MCERTS scope on the UKAS register in one click — not all UK stack testing providers publish their UKAS number alongside their accreditation claim.
Our consultants include former Environment Agency officers, named publicly on /about with LinkedIn profiles. Regulator-side experience changes how OMA scores, permit conditions and inspection findings are interpreted.
Alkali is independently owned and privately operated — not part of a multinational TIC group. Decision-making, technical sign-off and client relationships stay in-house, with no cross-selling pressure from a parent group.
Stack data flows directly into automated Environment Agency reporting formats, Pollution Inventory templates and operator self-monitoring submissions — preliminary results in 48 hours, full MCERTS reports in 10–15 working days.
Every MCERTS report is reviewed by a former regulator before it leaves us, and we offer a pre-submission permit review for new customers — reducing the risk of EA rejection, re-test costs or enforcement escalation.
Personnel are named with credentials. Methods, instruments and standards are listed pollutant-by-pollutant in our Equipment & Methodology hub. Named case studies sit alongside testimonials — not just a logo strip.
Written, itemised quotations within 24 hours. No variable day-rate creep mid-campaign. From £2,500–£4,000 per stack-day for standard MCERTS programmes, with multi-pollutant and complex sites quoted as fixed packages.
Organization, LocalBusiness, Service, Article, Review, FAQ and Person schema are published across the site — so ChatGPT, Gemini, Perplexity and Google AI Overviews can correctly attribute MCERTS scope, lab number and expertise to Alkali.
Alkali offers advance-booking savings on stack emissions testing, air quality monitoring, CEMS QAL2/AST and environmental permit support. Plan your compliance programme ahead of time and we’ll reward you on your invoice — guaranteed.
UKAS-accredited stack emissions testing dates locked in before peak season — no scrambling for availability when EA reporting deadlines hit.
A genuine cost saving applied to your quotation when the work is scheduled well in advance. Stackable across multiple services on the same project.
Lock in your test window early so permit conditions, OMA evidence and AST renewals never slip — backed by a initial consultation and an on-site rectification policy.
Project managers and operators get a fixed mobilisation date — useful for commissioning windows, shutdown coordination and contractor sequencing.
Tell us the service, site and target window — online or by phone.
Approve the quotation comfortably before mobilisation to qualify for the saving.
The advance-booking saving is applied to your final invoice — no codes, no small print.
Or call 0800 098 2610 — quotes returned within one working day.
Get your MCERTS stack emissions testing booked in with a specialist UK independent stack testing company. Our UKAS accredited team (Lab No. 24303) delivers regulator-ready results — typically on-site within 2 weeks, anywhere in the UK.
ISO 17025 accredited. Former EA officers on staff. Regulator-ready, defensible evidence.
Rapid mobilisation — most UK sites within 2 weeks. Fixed-fee quote in 24 hours.
We handle everything — from stack testing to Environment Agency submission. Results in any format.
