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MER Chemical Laboratory
and Services, Inc.

Water treatment and testing services Since 1979

Our plant and laboratory are located in Marikina City, home of our proprietary AQUACARE water treatment chemicals and time-tested, safe SURREV equipment cleaning services.

Request a quotation Call (02) 8681-8459

DOH-accredited laboratory for drinking water analysis. Accreditation No. 13-0014-2628-LW-2, valid until 31 December 2028.

Recognized by the DENR in 2018 (C.R. No. 026/2018), renewal in progress.

An analyst at work in MER's laboratory in Marikina City

Since 1979

Trusted by food plants, factories and buildings

Our customers by industry, as a share of our client list
  • Food and beverage 27%
  • Manufacturing 31%
  • Buildings and institutions 42%
  • Asiawide Refreshment (RC)
  • Coats Manila Bay
  • Emilio Aguinaldo College
  • Gardenia Bakeries
  • Greenwich
  • Fe Del Mundo Hospital
  • Heinz-UFC
  • Hi-Precision Laboratory
  • Honda
  • Lemon Square Factory
  • Oleofats Inc
  • Purefoods
  • Red Ribbon
  • Rockwell Mall
  • Starbucks
  • St. Luke's Medical Center
  • The Medical City
  • Toyota
  • Universal Robina Corp (URC)
  • Mars Philippines
  • Mitsubishi
  • Denso Philippines
  • FEU-NRMF
  • Silver Swan
  • TIP
  • Westin Plaza
See the full list, by industry

Food, beverage and food processing

  • Advance Food Concept Mfg. Corporation
  • Asiawide Refreshment Corporation
  • Baliwag Lechon Manok, Inc.
  • Besuto Food Corporation
  • BFC Worldwide
  • Big E Food Corporation
  • B-Mirk Enterprises Corporation
  • Bon Foods Corporation
  • Café Mary Grace Bakeshop
  • Caramel Pearl, Inc.
  • Century Canning Corporation
  • Century Pacific Foods, Inc.
  • Century Pacific Foods, Inc. – Dairy Division
  • C-Joy Poultry Meats Production, Inc.
  • Columbus Seafood Products, Inc.
  • Commonwealth Foods, Inc.
  • Delfi Foods, Inc. / Goya Mfg. Corporation
  • Domino Farms, Inc.
  • Eldon Industrial Corporation
  • Foremost Farms
  • Foster Foods, Inc.
  • Frabelle Corporation
  • Fresh and Famous
  • Fruitas Group Inc.
  • Garden Craft, Inc.
  • Gardenia Bakeries Phils., Inc.
  • Global Catering Services
  • Golden Tri-Bloc, Inc.
  • Goldilocks Bakeshop, Inc.
  • Grand Alphatech Corporation
  • Greenwich Pizza Corporation
  • Gruppo Vino, Inc.
  • Holiday Hills Farm, Inc.
  • Innovative Packaging Industry Corporation
  • Interbake Commissary Corporation
  • Jaeca's Specialty Food Products, Inc.
  • Jollibee Foods Corporation
  • Jomark Deli Foodmart
  • Kraft Foods, Inc.
  • Leslie Corporation
  • Magna Prime Packaging Corporation
  • Magnolia, Inc.
  • Mapagmahal Foods, Inc.
  • Mars Philippines
  • Miascor Catering
  • MLM Foods, Inc.
  • Mofel's Food International Corp.
  • MPM Noodles Corporation
  • New Leyte Edible Oil Manufacturing Corp.
  • NNB Foods
  • Nomikashi Corporation
  • Nutri-Asia, Inc.
  • Oleo Fats Inc.
  • Peak Foods, Inc.
  • Pepsi Cola Bottling Company of the Phils.
  • Phil-Asia Food Industries, Inc.
  • Phil-Foods Fresh Baked Products, Inc.
  • Philippine Health Food Manufacturing
  • Philippine Integrated Meat Corporation
  • Prime Copra Manufacturing Company
  • Purefoods Corporation – Flour Division
  • Purefoods Hormel Company, Inc.
  • Purefoods Product and Development Division
  • Red Ribbon Bakeshop, Inc.
  • Republic Flour Mills, Inc. Ltd.
  • Reysons Food Processing Corporation
  • RFM Corporation Cabuyao Meat Division
  • RFM Corporation
  • RFM Corporation – Dressing Plant
  • RFM Corporation – Gerber Baby Foods Division
  • RFM Corporation – Soya Mills Division
  • RFM Swift Cabuyao
  • Rombe Philippines, Inc.
  • Royal Oil Products, Inc.
  • Samyu Oil Products, Inc.
  • Silver Swan Corporation
  • San Miguel Corporation – Magnolia Poultry Division
  • Snow Mountain Dairy Corp.
  • Southeast Asia Foods, Inc. (SAFI)
  • Specialty Food Retailers, Inc.
  • Spencer Foods Corporation
  • Sprint Industrial Development Corp.
  • Staples' Food Corporation
  • Sunfrution Food Corporation
  • Sunifarms Manufacturing Corporation
  • Sunrich Manufacturing Corporation
  • Swift Foods Corporation
  • TJ Enterprises, Inc.
  • True Confectionary, Inc.
  • UFC Philippines, Inc.
  • Unilever Foods Phil., Inc.
  • Unilever RFM Ice Cream / Selecta
  • Villfoods Processing
  • Waffle Time, Inc.
  • Zagu Food Corp.
  • Zenith Foods Corporation

Manufacturing, industrial and engineering

  • Acbel Polytech Phils., Inc.
  • Adventure Manufacturing
  • Agchem Manufacturing Corporation
  • Air Liquide Phil., Inc.
  • Allied Motor Phils.
  • Allswell Plastic Mfg. Corporation
  • Amtes Corporation
  • Arkin Asia Logistic
  • Asahi Glass Phil., Inc.
  • Bataan Manufacturing Corporation
  • Best Chemicals and Plastics, Inc.
  • BP Waterworks
  • Britton Ameer
  • Camus Engineering
  • Capital Garments
  • CCL Label
  • CDC Manufacturing
  • Chemrez Technology, Inc.
  • Cirimar Industries
  • Clean Living, Inc.
  • Coats Manila Bay / Manila Bay Thread Corporation
  • Colgate Palmolive Philippines, Inc.
  • Crown Asia Compounders Corporation
  • Cyberman Industrial Corporation
  • Cybermate Industrial Corporation
  • Dai-ichi Electronics, Inc.
  • Dainippon Ink and Chemical Phil., Inc.
  • DIC Phils, Inc.
  • Em-pol Corporation
  • European Apparel Mfg.
  • Eurovek, Inc.
  • Evergreen Textile
  • Extensive Wood Processing Corporation
  • First PGMC Enterprises
  • Flexo Manufacturing Corporation
  • Fluid Tech Corporation
  • Fompac Plastic Corp.
  • Ford Phil., Inc. – Libis
  • Fortune Well Marketing Ent.
  • Global Geosynthetic
  • GNR Industrial
  • Guoco Ceramics / Lepanto Tiles, Inc.
  • Holiday Hills Farm, Inc.
  • Honda Phils., Inc.
  • Husky Plastics, Inc.
  • Hyperkem
  • International Starch & Chemical Co., Inc.
  • Johnson & Johnson Phils., Inc.
  • Kalinisan Steam Laundry
  • Kronne Steel Corporation
  • LC Lopez Resources
  • Manila Cordage Company
  • Megapack Container Corporation
  • Mendrez Mfg. Corporation
  • Merit Stainless
  • MIG System, Inc.
  • MJR Construction Firm
  • MPC Engineering Services
  • Nature Haus Phils. Inc.
  • Nelbot Builders, Inc.
  • Nissan Motor Phil., Inc.
  • Nobia, Inc.
  • Oriental Wood Processing Corporation
  • Oversea Wrap Knitting Company
  • Pacific Rim Ventures, Inc.
  • PC Canlas Builders Corp.
  • Peascorp
  • Philippine Globe Energy
  • Philippine Acrylic and Chemical Corp.
  • Philippine Automotive Components, Inc.
  • Philippine Petrochemical Products, Inc.
  • Philippine Vinyl Consortium, Inc.
  • Philippines Shell and Petroleum Corporation
  • Pilipinas Shell Petroleum Corporation
  • Plastmann Industrial Corporation
  • Polymer Chemicals, Inc.
  • Premier Adhesive and Coatings, Inc.
  • Prophile Sound
  • Pure Essence International
  • QC Styro Packaging Corporation
  • Resin Chemicals, Inc.
  • Rezcoat, Inc.
  • Rightpak International Corp.
  • San Miguel Yamamura Haiphong Glass Inc.
  • Santeh Feeds Corporation
  • SC & C Cosmetech Corporation
  • SCC Innovasia, Inc.
  • Shrinkpak Phils. Corporation
  • Sime Darby Philippines, Inc.
  • SJTC Mfg. Corporation
  • Soapwerke, Inc.
  • Southlink Waterworks, Inc.
  • Starpack Philippine Corporation
  • Sunny Warehouse Realty
  • Supreme Elite Resources
  • Swire Elan Suites Corporation
  • Teotico King Ranch
  • Thome Ship Management
  • Tobacco Industries of the Philippines
  • Toll Packers
  • Toshiba Information Equipment Phils., Inc.
  • Tottori Sanyo Electric Phils. Corp.
  • Toyota Pasig
  • Toyota Shaw
  • Transport and Engineering Services, Inc.
  • Unilever Saralee
  • United Pulp, Inc.
  • Welding Industries of the Philippines, Inc.
  • World Chemical Marketing
  • Worldwide Apparel Mfg. Company

Hospitals, hotels, schools and buildings

  • 3M Philippines, Inc.
  • 8 Rockwell
  • 27 Annapolis
  • AFP-MBAI
  • Agos Property
  • Alexandra Condominium
  • Arista Place
  • Asian Hospital and Medical Center
  • Ateneo Student Leadership Center
  • Binangonan Lakeview Hospital
  • California Garden Condominium
  • Camp Aguinaldo
  • Carlos Medical Center
  • Cathay Land, Inc.
  • Celebrity Sports Plaza, Inc.
  • Century Park Sheraton Hotel
  • Clinica Antipolo
  • Commonwealth Hospital
  • Construction Development Corp. of the Phil.
  • D' Microasia Medical Laboratory, Inc.
  • Days Hotel Philippine, Inc. – Batangas
  • Days Hotel Philippine, Inc. – Cebu
  • Days Hotel Philippine, Inc. – Tagaytay
  • De La Salle University
  • Dorris Plumbing
  • Eastwood City Estate Association, Inc.
  • Emilio Aguinaldo College
  • Empire Properties Holding, Inc.
  • Enterprise Center
  • Ever Gotesco Resources and Holdings Inc.
  • Executive Plaza Hotel
  • FEU-NRMF Medical Center
  • Fe Del Mundo Medical Center
  • Filinvest South Homes Biñan
  • First Phil. Holdings Company
  • Francesca Tower
  • Future Point Plaza
  • G & A Realty Corporation
  • G.A. Tower Condominium
  • Gilmore Heights Condominium
  • Greenhills Christian Fellowship Center
  • Greenhills Garden Square Condominium
  • Harris Memorial College
  • Haumaru Realty Corporation
  • IDESS Maritime Center Subic
  • J.P. Laurel Memorial Foundation Building
  • J.T. Paril and Associates
  • Joya Lofts and Towers
  • Kamagong Hotel
  • Keri Properties
  • Lamar Realty Development Corporation
  • Le Gran Tower
  • Legend Hotel – Mandaluyong
  • Life Land Properties
  • Litton and Company, Inc.
  • Lope De Vega Tower
  • Makati Cinema Square Condominium
  • Makati Coliseum
  • Makati Medical Center
  • Manila Central University Hospital
  • Manila Hilton International
  • Manila Medical Center
  • Manila North Harbor
  • Marist Village Association
  • Marlo Navigation
  • Medical Center of Parañaque
  • Mega World Gilmore Heights
  • Mendrez Mfg. Corp.
  • Meralco Ortigas
  • Mercure Grand Hotel
  • Miascor Catering
  • Mission Hospital
  • National Kidney and Transplant Institute
  • Nicorp Corp. / Golden Villas Subd.
  • Oceanic Realty and Property Mgt. Services
  • One Castilla
  • One Rockwell Condominium
  • One Sapphire Condominium
  • Ortigas & Company, Ltd.
  • Pacific Place Condominium
  • Pacific Resin Ventures, Inc.
  • Philippine First Condominium
  • Philippine Heart Center for Asia
  • Philippine Chemical Laboratories, Inc.
  • Philippine Stock Exchange Center
  • Phinma Plaza and Property Holdings
  • PLDT Makati
  • Prime Hospital and Medical Center, Inc.
  • Prestige Tower
  • Prince David Condominium
  • Prince Plaza Condominium
  • Q Plaza Corporation
  • Queen Mary Help of Christians Hospital
  • Ramabiel
  • Rapid City Realty
  • RCBC Condominium
  • RCBC Plaza
  • Retail Escape Complex
  • Riverbanks Development Corporation
  • Rockwell Center Assn., Inc.
  • Rockwell Center Corporation
  • Rockwell Land – 1 Proscenium Makati
  • Rockwell Land – 8 Benitez Quezon City
  • Rockwell Land – Sheridan Mandaluyong
  • Rockwell Land – Arton Strip Quezon City
  • Rockwell Meralco BPO Venture
  • Rockwell MFA Corporation
  • Rockwell Power Plant Mall
  • Rockwell Primaries
  • Rockwell Residential Tower
  • Salcedo Tower Condo Corporation
  • Salve Regina General Hospital
  • Saudi Arabian Embassy
  • Serendra Condominium
  • Shell South Luzon 2 Service Station
  • SJDM – Muzon Medical Center
  • Sophils General Merchandise
  • South Supermarket, Inc.
  • South Forbes Mansions
  • Southlink Waterworks, Inc.
  • St. Peter Memorial Chapels
  • St. Anthony Medical City
  • St. Luke's Medical Center Quezon City
  • St. Vincent Hospital
  • Sta. Monica Hospital and Medical Center
  • Sterten Place Condominium
  • STI College – Cubao
  • Sto. Niño General Hospital
  • Sunny Warehouse Realty
  • Sunplaza Condominium
  • Swire Elan Suites Condominium Corp.
  • Tesco Realty Co., Inc.
  • The Grove by Rockwell
  • The New Medical City General Hospital
  • The Pearl Manila Hotel
  • The Shang Grand Tower
  • The Vantage Condo Corporation
  • The Westin Philippine Plaza
  • Theresa Tower
  • Tribecca Tower Primaries
  • University of Perpetual Help Medical Center – Alabang
  • University of Perpetual Help Medical Center – Cavite
  • University of the East
  • Urban Environment Realty, Inc.
  • Valencia Hills Condominium Corp.
  • Villaroel Tower
  • World Citi Medical Center
  • World Class Resources

From the client list in our Company Profile 2026.

Water Treatment

AQUACARE water treatment chemicals, formulated for your specific system and application. Pick the system that is giving you trouble.

Learn more about water treatment
An analyst testing water at the bench in MER's laboratory
A container of AQUACARE Scale and Corrosion Control
A bag of AQUACARE CF-404 Cationic Flocculant
A container of AQUACARE Liquid Chlorine-S

Fuel cost abnormally increasing, or tubes failing early

Scale insulates the tubes, so you burn more fuel for the same steam, just as corroded surfaces lose heat transfer effectiveness.

4 Simple 4 Point Check

  1. 1 Test

    We analyse your boiler water

  2. 2 Treat

    AQUACARE holds scale and oxygen back

  3. 3 Monitor

    Historical data gives analysis of the condition of your system

  4. 4 Clean

    Gets rid of scale, corroded parts, grit and slime

Chemicals we use

  • AQUACARE Boiler Water Control
Request a quotation for your boiler

Scale, corrosion or growth in the tower

Evaporation concentrates minerals, and warm open water grows bacteria and algae.

4 Simple 4 Point Check

  1. 1 Test

    We check what is building up

  2. 2 Treat

    AQUACARE stops scale, rust and growth

  3. 3 Monitor

    Historical data gives analysis of the condition of your system

  4. 4 Clean

    Gets rid of scale, corroded parts, grit and slime

Chemicals we use

  • AQUACARE Scale and Corrosion Control
  • AQUACARE Algaecide
  • AQUACARE pH Control
Request a quotation for your cooling tower

Discharge parameters in its limits? Get assured of compliance

Over the limit can mean a fine, or an order to stop discharging.

  1. 1 Test

    Our laboratory analyses your discharge

  2. 2 Treat

    Chemical and biological treatment

  3. 3 Monitor

    Test kits between our visits

  • Coagulation and flocculation
  • Defoaming
  • Deodorization
  • Decolorization

Chemicals we use

  • AQUACARE Flocculant AF 403
  • AQUACARE Flocculant CF 404
  • AQUACARE Defoamer
  • AQUACARE Wastewater Disinfectant
Request a quotation for your wastewater

Drinking water safe for people, production and places

Good housekeeping starts with water tested by an accredited laboratory.

  1. 1 Test

    DOH-accredited laboratory analysis

  2. 2 Treat

    AQUACARE chlorination and disinfection

  3. 3 Monitor

    Test kits between reports

Chemicals we use

  • AQUACARE Liquid Chlorine-S
  • AQUACARE Water Disinfectant
Request a quotation for your drinking water
Also Chilled water and brine, with AQUACARE Corrosion Control Hot water Chemical Metering Pumps Automated Monitoring and Chemical Feeding System

How an AQUACARE program runs

AQUACARE program 1 2 3 4 5
  1. 1

    System survey

    Data gathering of operation, equipment and water quality

  2. 2

    Dosage design

    Customized dosages: initial, regular and shock

  3. 3

    Plant visits

    Inspection, water sampling and reporting

  4. 4

    Support for your staff

    Easy to use MER Water Test Kits to monitor your water softener and chemical feeding system's efficiency

  5. 5

    Complete reporting

    Up to date and complete reporting

Laboratory Testing and Products

DOH-accredited for drinking water analysis since 1993.

A pH meter reading water samples in MER's laboratory

Department of Health

Accredited laboratory for drinking water analysis

Accreditation number
13-0014-2628-LW-2
Valid until
31 December 2028
Accredited since
1993
  • Thermotolerant coliform (E. coli) Shows whether the water is contaminated
  • Colour, apparent A first sign of dissolved matter or rust
  • Turbidity Cloudiness, which can shield bacteria from disinfection
  • pH Whether the water leans acid or alkaline
  • Total dissolved solids How much is dissolved in the water
  • Residual chlorine Whether disinfection is still working
Other tests we run

For water and wastewater, on request. Not covered by our DOH accreditation, which is for the six tests above.

Meters and instruments

Conductivity, Temperature, Specific gravity

Gravimetric

Total solids, Total suspended solids, Oil and grease

Colorimetric, volumetric and nephelometric

Settleable solids

Titration

Acidity, Available chlorine, Alkalinity (total, bicarbonate, carbonate, hydroxide), Hardness (total, calcium, magnesium), BOD5, COD, Chloride, Dissolved oxygen, Sulfite

Spectrophotometric

Aluminum, Ammonia as nitrogen, Arsenic, Cadmium, Chromium (hexavalent), Copper, Cyanide, Iron, Lead, Manganese, Mercury, Nitrate as nitrogen, Nitrite as nitrogen, Phenolic substances, Phosphate, Silica (dissolved), Silver, Sulfate, Surfactants (MBAS), Zinc

Microbiological

Total coliform, Fecal coliform, Total plate count

Wastewater

Jar test, Biological bench test, Sludge moisture analysis

Professional Regulation Commission, Board of Chemistry

Authorised to operate as a chemical laboratory

Certificate No. 261, valid until 27 August 2027

Rated Excellent

in the DOH National Reference Laboratory's 2024 proficiency testing for water microbiology.

Learn more about the laboratory

MER Test Kits & Replenishments

MER Water Test Kits come with complete reagents, apparatus and an instruction manual. Replenishment reagents are available as well.

  • The MER Chlorine Test Kit, with its reagent bottles

    MER Chlorine Test Kit

  • The MER Midget Chlorine Test Kit, with its reagent bottles

    MER Midget Chlorine Test Kit

  • The MER Primary Chlorine Test Kit, with its reagent bottles

    MER Primary Chlorine Test Kit

  • The MER Primary Boiler and Cooling Water Test Kit, with its reagent bottles

    MER Primary Boiler and Cooling Water Test Kit

  • The MER Water Alkalinity Test Kit, with its reagent bottles

    MER Water Alkalinity Test Kit

  • The MER Water Hardness Test Kit, with its reagent bottles

    MER Water Hardness Test Kit

  • The MER Water pH Test Kit, with its reagent bottles

    MER Water pH Test Kit

  • Water Test Meters (pH, Conductivity and TDS)
  • Jar Testing
  • Bioaugmentation Bench Testing
See all MER test kits

Equipment Cleaning

SURREV cleaning services unloads you of the laborious and tricky preventive maintenance work.

We also clean

  • Evaporative condensers
  • Water reservoirs
  • Tanks
  • Water softeners
Learn more of our equipment service
A packaged fire-tube boiler on a cleaning job
A chunk of hard scale held in a hand Scale we removed
From our own jobs
Scale insulates the tubes, so you burn more fuel for the same steam.
Two technicians circulating cleaning chemical through a plate heat exchanger
The plate pack seen through a heat exchanger port Through the port
From our own jobs
Scale and rust on the plates mean less heat moved for the same pumping.
A technician cleaning a cooling tower's louvres on site
Cooling tower fill caked with dark deposits Fill, before cleaning
From our own jobs
Scale and slime build up where warm water meets the air, and the flow drops.
Four MER staff working together at an office desk

Started in 1979 as a laboratory

Engr. Ma. Emma C. Ricafrente founded MER in 1979 to test what builds up in water systems. Customers asked for the cure, so MER began making it.

years in water
47
clients listed
350
DOH-accredited tests
6
Learn more about MER Message from the Founder
Four of MER's laboratory staff in lab coats, goggles and masks, giving a thumbs up

Made and tested in Marikina City

  • Our own plant

    Makes, packs and delivers AQUACARE and SURREV

  • Quality control laboratory

    Checks every batch, and makes our test kits

  • Service laboratory

    Analysts and a microbiologist test your water

  • Technical service engineers

    Survey, visit and report on your program

How can we help with your water quality?

Experiencing water operational problems? Getting complaints on your water? Tell us, and we will tell you what it needs.

Request a quotation Or message us
Phone and mobile
(02) 8681-8459 · 0922-899-0248
Email
info@merchemical.com.ph
Office, laboratory and plant
64 Major Dizon St., Industrial Valley Complex,
Marikina City, 1802 Metro Manila
Hours
Monday to Friday, 8:00am to 5:00pm
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MER Chemical Laboratory and Services, Inc.
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