Solutions directory
Start with the treatment problem, not a product list.
Start with your role
Project guidance for contractors and design teams
For civil project teams
Plan HES basin treatment, site testing, dosing equipment and field support around project conditions.
Choose this path Design engineersFor design engineering firms
Review testing, treatment options, specification inputs and RPEQ engineering scope.
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HES Basin Solutions
A dedicated service for civil construction teams: dosing stations, standard and bespoke chemistry options, jar testing, calibration and in-house RPEQ support for High Efficiency Sediment Basins.
OpenOwner resource / H₂S
What is hydrogen sulphide — and what does it mean for your assets?
A practical guide to worker exposure, sewer corrosion, odour complaints and lifecycle decisions for water and wastewater teams.
Browse by application
Construction water & HES Basin treatment
For civil contractors and design engineering teams managing sediment basins, changing inflows and construction water.
Coagulants: ACH, ClearFlow & ClearFlow Go
Compare standard ACH (aluminium chlorohydrate), ClearFlow and ClearFlow Go for site-water clarification. Critical Elixirs supplies standard market options alongside proprietary and bespoke chemistry, selected through representative water testing rather than a fixed recipe.
Details Solid pH buffering & H₂S knock-downBuffrite & Buffrite Rapid: solid treatment blocks
Two solid block options with different treatment roles. Buffrite is a slower-release product focused on pH adjustment and buffering for site waters and suitable HES Basin applications. Buffrite Rapid takes a multifunctional approach to hydrogen sulphide (H₂S) knock-down. Select the grade and application arrangement against the water, operating conditions and treatment objective.
Details Water treatmentWater clarification
Clarification options for process water, HES basins and sediment dams, selected through representative sampling and bench testing.
Details TestingJar testing
Bench testing that compares coagulant, pH and settling behaviour on a representative sample, giving the team evidence to plan the next step.
Details EquipmentDosing stations
Trailer-mounted and IBC-mounted dosing stations for HES basins and other treatment duties, supplied by the same team that selects the chemistry and supports the calibration.
DetailsBrowse by application
Sewer H₂S, odour & corrosion control
For water utilities and asset owners managing network sulphide, odour, corrosion risk, dosing performance and worker-safety questions.
Multiple chemistry options. One performance question.
Septine, Suppressor and magnesium hydroxide (pH Elixir Basic and Premium) are separate options—not a single product range. Suitability is assessed against the network duty and site evidence.
Calibration is not tied to chemical supply.
We can assess actual dosing and report performance whether the chemistry is supplied by Critical Elixirs or another provider.
Sewer H₂S, odour & corrosion control
A site-scoped programme to manage sulphide formation, odour and corrosion risk across sewer networks. Septine, Suppressor and magnesium hydroxide (pH Elixir Basic and Premium) are distinct chemistry options. Dosing calibration and performance reporting can also be scoped independently of the chemistry supplier.
Details Sewer dosingSeptine sewer dosing
Septine is our bespoke chemistry option for hydrogen sulphide (H₂S) and sulphide control in sewer utility networks. It is assessed against the network duty and available data alongside other distinct chemistry options, with dosing and engineering support available from the same team.
Details Named chemistrySuppressor
Suppressor is a liquid chemistry for sewer applications that suppresses sulphide formation while the dose and residual are maintained. Suitability and operating settings are confirmed for the network.
Details Sewer chemistry & network performanceMagnesium Hydroxide for Odour & Corrosion Control
Magnesium hydroxide liquid supplies alkalinity for pH control and can help manage hydrogen sulphide (H₂S) release in suitable sewer applications. Critical Elixirs combines chemistry selection with in-network dosing efficacy calibration: checking what the pump delivers, where the treatment reaches and how downstream conditions respond.
Details Sewer monitoringH₂S monitoring & dosing performance optimisation
Use network and operating evidence to assess H₂S performance, identify where conditions shift and refine the dosing programme against agreed measures. The review can assess existing chemistry regardless of supplier.
Details Independent calibrationIn-network dosing efficacy calibration & dose tracing
Trace dosed product through the network, calibrate actual equipment delivery and report performance. This service can be scoped for your existing chemistry whether it is supplied by Critical Elixirs or another provider.
Details MonitoringRemote gas monitoring
Remote gas monitoring for sewer and related duties, with sensor selection, location and reporting needs determined with the team for the site.
Details EngineeringOdour control sizing
Size an odour-control approach from the chemical and gas data available, the duty and the physical constraints—not from a generic unit assumption.
Details EngineeringCorrosion & asset economics
A practical estimate of corrosion-related asset implications and treatment economics, with assumptions made explicit rather than savings promised.
Details Workplace safety supportWorkplace H₂S exposure assessment & compliance support
A scoped technical review to help frame H₂S exposure information against applicable STEL/TWA requirements for the relevant jurisdiction and date. This is not occupational hygiene certification.
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Water, industrial & remediation treatment
For operators treating process water, nutrient loads, acidic mine drainage, leachate and residual chlorine against site-specific requirements.
Lime Elixir
A liquid lime product for pH control duties, offered as an alternative to handling dry lime where a pumpable liquid suits the site. Availability and suitability are confirmed by enquiry.
Details Nutrient removalElixir Crystals: ammonia and phosphorus removal
Crystal-form chemistry for ammonia and phosphorus removal duties in water and industrial streams. Application, dose and expected performance are established by testing on your water, not assumed.
Details Nutrient removalPhosphorus removal
Phosphorus removal chemistry and dosing for water and industrial operators, scoped from the water outward: sample, test, select, dose, calibrate, optimise.
Details Water treatmentAcid mine drainage & metals treatment
A site-specific treatment scope for pH correction and metals precipitation, based on water analysis, residual management and the applicable approvals.
Details Water treatmentDechlorination
Flow-paced neutralisation to reduce residual chlorine before discharge, with the target residual and operating basis governed by the site approval.
Details Landfill waterLandfill leachate conditioning
Condition leachate at sumps using a site-scoped combination of pH, odour and coagulant dosing, tested on the leachate before wider application.
DetailsBrowse by application
Engineering, dosing & chemical supply
For project teams that need the treatment system scoped, supplied and supported—not just a drum of chemistry.
Technical support & RPEQ engineering
Architecture, chemistry, pumping and maintenance support from an in-house team that includes RPEQ capability. One group looks at the whole system rather than handing you between suppliers.
Details ManufactureChemical manufacture & supply
In-house manufacture and supply for selected bespoke formulations and standard chemical options, with the delivery format matched to the duty and site.
Details Managed servicesManaged chemical dosing
A managed dosing service that keeps the operating loop visible: establish a baseline, commission, calibrate, monitor, report and adjust against agreed site measures.
Details Chemical supplyOnsite & remote batching
Batch selected liquid chemistry onsite or through a remotely supported arrangement where it suits the duty, to reduce the need to freight slurry.
Details