Skip to main content
Exclusive Savings: Take 10% OFF All Cenmed Products | Upgrade Your Lab For Less Shop Now
US English

pH Indicators

Browse our curated selection of pH Indicators from leading global manufacturers. Find research-grade reagents, certified standards, and specialty supplies backed by Cenmed's expert sourcing and technical support.

  
  • 2-ethylhexyl phosphate (mono- and di- ester mixture) (c09-0877-188)
    Add to Cart The item has been added
    E302314-500g

    2-Ethylhexyl Phosphate (Mono- and Di- Ester mixture) (C007B-152770)

    Price: $178.10
    List Price: $197.88
    2-Ethylhexyl Phosphate (Mono- and Di- Ester mixture).
    SKUE302314-500g
    MFR. NameAladdin Scientific
    Catalog No. C007B-152770
    Pack Size 1 EA
    Price:
    Price: $178.10
    List Price: $197.88
    Quantity:
     
    The item has been added
  • 3-(tritylthio)propionic acid
    Add to Cart The item has been added
    53695-1G-F

    3-(TRITYLTHIO)PROPIONIC ACID >=97.0%

    Price: $306.26
    List Price: $340.29
    3-(Tritylthio)propionic acid
    SKU53695-1G-F
    MFR. NameSigma-Aldrich
    Catalog No. C005B-028893
    Pack Size 1 GR
    Price:
    Price: $306.26
    List Price: $340.29
    Quantity:
     
    The item has been added
  • 4-(dimethylamino)benzaldehyde gr for analysis reagent ph eur (c08-0436-039)
    Add to Cart The item has been added
    1.03058.1000

    4-(Dimethylamino)Benzaldehyde Gr For Analysis Reagent Ph Eur (C003B-232692)

    Price: $5,791.84
    List Price: $6,435.38
    Formula: 4-[(CH3)2N]C6H4CHO Grade: Reag. Ph Eur CAS No.
    SKU1.03058.1000
    MFR. NameHACH
    Catalog No. C003B-232692
    Pack Size 1 EA
    Price:
    Price: $5,791.84
    List Price: $6,435.38
    Quantity:
     
    The item has been added
  • 4-methyl-2-oxovaleric acid (c15-1283-830)
    Add to Cart The item has been added
    68255-5G

    4-METHYL-2-OXOVALERIC ACID >=98.0% T (C005B-081780)

    Price: $535.11
    List Price: $594.56
    4-Methyl-2-oxovaleric acid
    SKU68255-5G
    MFR. NameSigma-Aldrich
    Catalog No. C005B-081780
    Pack Size 5 GR
    Price:
    Price: $535.11
    List Price: $594.56
    Quantity:
     
    The item has been added
  • 5,5'-dithiobis(2-nitrobenzoic acid) (c15-1258-636)
    Add to Cart The item has been added
    D8130-100G
    5,5&#8242-Dithiobis(2-nitrobenzoic acid) is also called DTNB or Ellman&#8242s reagent. It is a water soluble reagent, which interacts with thiol groups, and can be used conveniently at neutral pH.
    SKUD8130-100G
    MFR. NameSigma-Aldrich
    Catalog No. C005B-057860
    Pack Size 100 GR
    Price:
    Price: $3,435.28
    List Price: $3,816.98
    Quantity:
     
    The item has been added
  • 5,5'-dithiobis(2-nitrobenzoic acid) (c15-1258-637)
    Add to Cart The item has been added
    D8130-10G
    5,5&#8242-Dithiobis(2-nitrobenzoic acid) is also called DTNB or Ellman&#8242s reagent. It is a water soluble reagent, which interacts with thiol groups, and can be used conveniently at neutral pH.
    SKUD8130-10G
    MFR. NameSigma-Aldrich
    Catalog No. C005B-057861
    Pack Size 10 GR
    Price:
    Price: $490.61
    List Price: $545.12
    Quantity:
     
    The item has been added
  • 5,5'-dithiobis(2-nitrobenzoic acid) (c15-1258-638)
    Add to Cart The item has been added
    D8130-1G
    5,5&#8242-Dithiobis(2-nitrobenzoic acid) is also called DTNB or Ellman&#8242s reagent. It is a water soluble reagent, which interacts with thiol groups, and can be used conveniently at neutral pH.
    SKUD8130-1G
    MFR. NameSigma-Aldrich
    Catalog No. C005B-057862
    Pack Size 1 GR
    Price:
    Price: $144.69
    List Price: $160.77
    Quantity:
     
    The item has been added
  • 5,5'-dithiobis(2-nitrobenzoic acid) (c15-1258-639)
    Add to Cart The item has been added
    D8130-25G
    5,5&#8242-Dithiobis(2-nitrobenzoic acid) is also called DTNB or Ellman&#8242s reagent. It is a water soluble reagent, which interacts with thiol groups, and can be used conveniently at neutral pH.
    SKUD8130-25G
    MFR. NameSigma-Aldrich
    Catalog No. C005B-057863
    Pack Size 25 GR
    Price:
    Price: $926.87
    List Price: $1,029.85
    Quantity:
     
    The item has been added
  • 5,5'-dithiobis(2-nitrobenzoic acid) (c15-1258-641)
    Add to Cart The item has been added
    D8130-5G
    5,5&#8242-Dithiobis(2-nitrobenzoic acid) is also called DTNB or Ellman&#8242s reagent. It is a water soluble reagent, which interacts with thiol groups, and can be used conveniently at neutral pH.
    SKUD8130-5G
    MFR. NameSigma-Aldrich
    Catalog No. C005B-057865
    Pack Size 5 GR
    Price:
    Price: $313.16
    List Price: $347.95
    Quantity:
     
    The item has been added
  • 8-hydroxypyrene-1,3,6-trisulfonic acid trisodium salt
    Add to Cart The item has been added
    H1529-1G

    8-HYDROXYPYRENE-1 3 6-TRISULFONIC ACID TRISODIUM SALT >=97%

    Price: $238.67
    List Price: $265.19
    Application 8-Hydroxypyrene-1,3,6-trisulfonic acid trisodium salt (HPTS) can be used to prepare: Extruded fluorescent plastic indicator film for the detection of gaseous and dissolved CO 2 . Highly fluorescent waterborne polyurethane (WPU) matrix
    SKUH1529-1G
    MFR. NameSigma-Aldrich
    Catalog No. C005B-054516
    Pack Size 1 GR
    Price:
    Price: $238.67
    List Price: $265.19
    Quantity:
     
    The item has been added
  • acetic acid 10% v/v (1+9), 4l
    LC101900-L03

    ACETIC ACID 10% V/V (1+9), 4L

    Price: $346.19
    List Price: $384.66
    The LabChem 10% v/v acetic acid in liquid form, is soluble in water. It is non-flammable and has vinegar odor. Application: For Laboratory and Manufacturing Use Only
    SKULC101900-L03
    MFR. NameLABCHEM
    Catalog No. C003B-532488
    Pack Size 1 EA
    Price:
    Price: $346.19
    List Price: $384.66
    Quantity:
     
  • acetic acid 20% v/v (1+4), 4l
    LC102100-L03

    ACETIC ACID 20% V/V (1+4), 4L

    Price: $312.81
    List Price: $347.57
    The LabChem 20% v/v acetic acid in liquid form, is soluble in water. It is non-flammable and has vinegar odor. Application: For Laboratory and Manufacturing Use Only
    SKULC102100-L03
    MFR. NameLABCHEM
    Catalog No. C003B-532514
    Pack Size 1 EA
    Price:
    Price: $312.81
    List Price: $347.57
    Quantity:
     

About pH Indicators

Cenmed Enterprises provides a comprehensive selection of pH Indicators products sourced from leading global manufacturers. Our catalog spans research-grade reagents, certified standards, and specialty compounds used across clinical, academic, and industrial laboratories worldwide.

With decades of expertise in laboratory supply distribution, we offer competitive pricing, reliable stock availability, and dedicated technical support. Whether you need small quantities for research or bulk orders for manufacturing, our team is ready to assist with sourcing, compliance documentation, and logistics.

Frequently Asked Questions

  • What documentation is provided with orders?

    All orders include a Certificate of Analysis (CoA), Safety Data Sheet (SDS), and a packing slip. Additional regulatory or compliance documentation can be requested at the time of order for products requiring special handling or import/export certification.

  • What is the minimum order quantity?

    Minimum order quantities vary by product and are listed on each product page. For bulk or custom quantity orders, please contact our sales team at 732-447-1100 or request a quote online for custom pricing.

  • How long does shipping take?

    Standard orders ship within 1–3 business days from our New Jersey distribution center. Expedited and international shipping options are available. Hazardous materials ship in compliance with IATA/DOT regulations and may require additional lead time.

  • Can I return a product?

    We accept returns on non-hazardous, unopened products within 30 days of delivery. Controlled substances, refrigerated items, and custom orders are non-returnable. To initiate a return, please complete the return request form and submit it to our customer service team for approval. Returns will be processed once your request has been reviewed and authorized.

  • Do you offer volume discounts?

    Yes. Volume pricing is available for most products in our catalog. Contact our sales team or use the "Request a Quote" feature to get custom pricing for your organization based on your annual purchase volume and specific product needs.