Specification
Grade, particle size, performance criteria, packaging and test method defined before sourcing begins.
INDUSTRIAL ADSORBENTS · FILTRATION MEDIA · GASES · UK
The specification
comes first.
H&H Process Materials sources and supplies industrial adsorbents, filtration media, process materials and gases for the UK market. Every quotation starts from your written specification and states the documentation, test methods and delivery terms behind it.
THE H&H STANDARD
Part specification.
Part evidence.
All accountable.
Evidence
Technical data, safety data, representative analysis, origin and packaging reviewed before commitment.
Delivery
Price in sterling, lead time, packing and delivery terms stated clearly in writing.
MOLECULAR SIEVES · ACTIVATED CARBON · PROCESS GASES · FILTER MEDIA · ION EXCHANGE · FOOD-GRADE GASES ·
01 / MEDIA
Adsorbents and filtration media
Molecular sieves, activated alumina and carbon, ion-exchange resin, filter aids, grinding and support media.
Eight material families →02 / INDUSTRIAL GASES
Process and measurement gases
Oxygen, nitrogen, carbon dioxide, helium and certified calibration mixtures for water treatment, process engineering and instrumentation.
Industrial gases →03 / CATERING GASES
Food-grade gases
Food-grade gases for aeration, dispense and packaging, quoted only against the specification and documentation for that use.
Catering gases →01 / MATERIALS
Eight material families.
One disciplined process.
Grades, sizes and pack formats are listed below. Industrial and catering gases have dedicated sections below. If your requirement is not shown, send the specification and we will tell you plainly whether we can match it.
Showing 8 of 8 materials
M-01
Molecular sieves
- TYPES
- 3A, 4A and 13X beads
- SIZES
- 3-5 mm; CMS 1.0-2.0 mm; Li-LSX 0.4-0.8 mm
- USE
- Compressed-air and gas drying, insulating glass, PSA nitrogen and oxygen
M-02
Activated alumina
- TYPES
- Standard spheres; permanganate-impregnated
- SIZES
- 2.5-5.0 mm and 3-5 mm
- PACK
- 25 kg PE-lined bags or 140 kg drums
Heatless and heated desiccant dryers, and control of odour and corrosive gases.
M-03
Activated carbon
- TYPES
- Coconut-shell granular; coal-based extruded; impregnated
- SIZES
- 8×30 mesh; 4 mm pellet
- USE
- Water treatment, air and gas purification, H₂S and odour control
M-04
Ion-exchange resin
- TYPES
- Strong-acid cation, strong-base anion, mixed bed
- PACK
- 25 litre bags
- USE
- Industrial water treatment, softening and deionisation
M-05
Indicating silica gel
- TYPES
- Orange to green, cobalt-free
- SIZES
- 2-5 mm and 3-5 mm beads
- PACK
- 25 kg moisture-resistant bags
Transformer breathers and compressed-air drying.
M-06
Filter aids
- TYPES
- Diatomite, including flux-calcined grades; perlite
- SELECTION
- Permeability matched to the filtration process
- USE
- Beer, wine, juice, edible oil and industrial filtration
M-07
Grinding media
- TYPES
- Zirconium-silicate and yttria-stabilised zirconia beads
- SIZES
- 0.6 mm to 1.6 mm
- USE
- Bead mills and wet dispersion in coatings, inks and pigments
M-08
Support media
- TYPES
- Inert ceramic balls, low alumina
- SIZES
- 6 mm and larger
- USE
- Bed support in dryers, adsorbers and reactor vessels
Food-contact, drinking-water and breathing-air applications are quoted only against the customer's written specification and the manufacturer's documentation for that use.
02 / INDUSTRIAL GASES
Process gases.
Specified for the application.
We investigate supply routes for water treatment, process engineering and measurement. Tell us the gas specification, quantity, frequency and delivery location. Supply is subject to a suitable manufacturer, documentation and delivery route being confirmed.
O₂
Oxygen
Biological wastewater treatment, aquaculture oxygenation and oxygen feed for ozone generators.
- FOR
- Water-treatment contractors, effluent plants and fish farms.
- SPECIFY
- Purity, flow demand and compatible delivery format.
CO₂
Carbon dioxide
pH adjustment of alkaline water and remineralisation within engineered water-treatment systems.
- FOR
- Treatment-system installers, factories and water-treatment companies.
- SPECIFY
- Gas quality, process demand and delivery arrangements.
N₂
Nitrogen
Purging and inerting process equipment, pipelines and tanks.
- FOR
- Process engineers, chemical manufacturers and food producers.
- SPECIFY
- Purity, moisture limits, operating pressure and volume.
MIX
Certified calibration mixtures
Calibration and functional testing of gas detectors, emissions analysers and process instruments.
- FOR
- Instrument service companies, laboratories and plant operators.
- SPECIFY
- Exact components, concentrations, balance gas, uncertainty, traceability and expiry.
He
Helium and leak-test mixtures
Tracer-gas leak testing of components, pressure systems and pipework.
- FOR
- Testing specialists and equipment manufacturers.
- SPECIFY
- Test method, purity or blend and detector compatibility.
Gas grade, purity and supply format are matched to the application. Availability and delivery coverage are confirmed in the quotation.
03 / FOOD & CATERING GASES
From cream preparation
to food production.
Food-grade gases and mixtures for professional catering, beverage dispensing and food processing. We source against the intended use, with grade, net contents, equipment compatibility and delivery terms confirmed before supply.
N₂O
Food-grade nitrous oxide
Cream whipping and dessert aeration in compatible catering equipment.
- FOR
- Cake shops, dessert businesses, restaurants and caterers.
- SPECIFY
- Unflavoured E942 specification, net fill and valve compatibility.
CO₂
Food-grade carbon dioxide
Carbonating soft drinks and sparkling water, and dispensing suitable draught drinks.
- FOR
- Cafés, restaurants, pubs, bars and beverage producers.
- SPECIFY
- E290 specification, beverage system and cylinder connection.
N₂ / CO₂
Beer and dispense gas mixtures
Draught beer and stout dispensing, with the blend matched to the drink and installation.
- FOR
- Pubs, bars, hotels and restaurants.
- SPECIFY
- Required nitrogen/CO₂ ratio, pressure and dispense equipment.
N₂
Food-grade nitrogen
Suitable beverage applications and oxygen displacement in food-production processes.
- FOR
- Beverage businesses, bakeries and food producers.
- SPECIFY
- E941 specification, application and delivery format.
MAP
Food packaging mixtures
Modified-atmosphere packaging using product-specific nitrogen, CO₂ and, where appropriate, oxygen blends.
- FOR
- Prepared-meal producers, commercial bakeries and food manufacturers.
- SPECIFY
- Food type, packaging system and validated blend specification.
LN₂
Liquid nitrogen
Cryogenic freezing and chilling in suitable food-processing equipment.
- FOR
- Food manufacturers, specialist kitchens and commercial dessert producers.
- SPECIFY
- Suitable cryogenic vessel, consumption, trained handling and delivery access.
Liquid nitrogen requires specialist cryogenic delivery and suitable vented storage. Trained handling, ventilation and suitable protective equipment are essential. No liquid nitrogen may remain in food or drink when served.
Supply built around your requirement.
We source through manufacturers and specialist suppliers. We do not manufacture, blend or fill gases, and do not currently hold gas stock. Cylinder, exchange and cryogenic options are assessed individually, subject to availability and location.
Documentation before commitment.
We review the agreed gas specification, safety data, representative analysis and applicable container approval documents. For food use, the relevant food-grade specification is confirmed. Connection compatibility, storage, shelf life or mixture expiry and container return arrangements form part of the enquiry.
04 / HOW WE WORK
Defined. Compared.
Verified.
A consistent sequence gives you a clear basis for technical and commercial comparison.
Define the requirement
We record the application, grade, particle size, performance criteria, packaging and the relevant test method.
Compare suitable routes
The same written requirement goes to suitable manufacturers and stockholders, so offers can be compared like for like.
Review the evidence
Technical data, a representative certificate of analysis, safety data, origin and packaging are reviewed before any commitment. Where performance is claimed, we ask for the test method and conditions.
Issue the quotation
Quantity, delivered price, lead time, validity, payment terms and any sample or trial is stated clearly in writing.
05 / COMPLIANCE
What every quotation
states.
No approximate quotations. If a requirement cannot be matched responsibly, we say so.
- PRODUCT
- Exact grade and specification, with the stated test method
- DOCUMENTS
- Technical data sheet, GB-format safety data sheet, representative certificate of analysis
- ORIGIN
- Manufacturer and country of origin
- UK REACH
- Position confirmed in writing before supply
- PACKING
- Pack size, pallet configuration and ISPM 15 status where relevant
- PRICE
- Delivered UK price in sterling, with VAT treatment stated
- TERMS
- Lead time, payment terms and quotation validity
06 / BEYOND THE PORTFOLIO
For requirements outside the portfolio.
Where you need a material we do not list, we can investigate suitable supply routes against a defined technical and commercial brief.
Discuss a requirement →For manufacturers seeking a UK route.
We consider UK representation for established manufacturers that can show consistent quality, English-language documentation and credible technical support.
Manufacturer enquiries →07 / THE COMPANY
A verifiable UK
trading company.
H&H Process Materials is a trading name of Holland & Holland Associates Limited, registered in England and Wales and based in Bristol. We are not a manufacturer. Our role is to define requirements, compare credible supply routes and review the technical and commercial information before quoting.
Where H&H supplies material, we are your UK point of contact from enquiry to delivery, with the commercial basis, documentation and delivery terms set out in writing.
DISCRETION AS STANDARD
Enquiries, specifications, volumes and prices are treated as confidential. Where a requirement must be discussed with a manufacturer, we share only what is necessary and do not identify your organisation without your agreement.
- REGISTERED NAME
- Holland & Holland Associates Limited
- COMPANY NUMBER
- 04759022
- JURISDICTION
- England and Wales
- REGISTERED OFFICE
- 253 North Road, Stoke Gifford, South Gloucestershire, BS34 8PW
- WHATSAPP ONLY
- 07903 420045
- PUBLIC REGISTER
- View on Companies House
08 / ENQUIRE
Send the
specification.
Send whatever you have: a data sheet, a current product name, or simply the application. We will come back to you with questions or a written quotation.