pH Buffers


A full range of pH buffers for most applications. Buffers are traceable to NIST standards and each includes a comprehensive Certificate of Analysis. All buffers are certified at 25 °C.

• Color coded Buffers with flip-top cap for pH 4, 7 &10

• Available in sizes from 500 ml to 20 liters

• Certificate of Analysis with actual concentration, lot number,
   expiry date, and traceability to NIST, where applicable

• Easy recognition, easy dispensing

• Use only what is required. Save money on larger volumes

• Complete documentation for audit purposes




Buffer Solution Catalog Number      
(All buffers certified at 25ºC) 500 ml 1 L 5 L 10 L 20 L
Acetate Buffer for As (pH 5.5) 250-200-100 250-200-101 250-200-102    
Acetate Buffer for Br (pH 4.6-4.7) 250-200-130 250-200-131 250-200-132    
Acetate Buffer for Cl (pH 4) 250-200-160 250-200-161 250-200-162    
Acetate Buffer for CN (pH 4.5) 250-200-190 250-200-191 250-200-192    
Acetate Buffer for F 250-200-220 250-200-221 250-200-222    
Acid Buffer with Chloride 250-200-250        
Adams-Evans Buffer Solution     250-240-130 250-240-131 250-240-132
Ammonium Acetate - Acetic Acid Buffer 250-200-280 250-200-281 250-200-282    
Barium Borate-Hydroxide Buffer 250170-150 250-170-151      
Borate Buffer 250-200-310 250-200-311 250-200-312    
Borax Buffer, 0.00996M 250-200-340 250-200-341 250-200-342 250-200-343 250-200-344
Boric Acid Buffer   250-200-370 250-200-371 250-200-372 250-200-373
Buffer Masking Reagent 250-240-220 250-240-221 250-240-222    
Buffer pH 1 250-201-001 250-201-002 250-201-003 250-201-004 250-201-005
Buffer pH 2 250-202-001 250-202-002 250-202-003 250-202-004 250-202-005
Buffer pH 3 250-203-001 250-203-002 250-203-003 250-203-004 250-203-005
Buffer pH 4 250-204-001 250-204-002 250-204-003 250-204-004 250-204-005
Buffer pH 4 red 250-204-501   250-204-502   250-204-503
Buffer pH 4 concentrate 250-204-701 250-204-702      
Buffer pH 5 250-205-001 250-205-002 250-205-003 250-205-004 250-205-005
Buffer pH 6 250-206-001 250-206-002 250-206-003 250-206-004 250-206-005
Buffer pH 7 250-207-001 250-207-002 250-207-003 250-207-004 250-207-005
Buffer pH 7 yellow 250-207-501   250-207-502   250-207-503
Buffer pH 7 concentrate 250-207-701 250-207-702      
Buffer pH 7.2 (phosphate) 250-110-100 250-110-101 250-110-102    
Buffer pH 7.40 250-200-580 250-200-581 250-200-582    
Buffer pH 8 250-208-001 250-208-002 250-208-003 250-208-004 250-208-005
Buffer pH 9 250-209-001 250-209-002 250-209-003 250-209-004 250-209-005
Buffer pH 10 250-210-001 250-210-002 250-210-003 250-210-004 250-210-005
Buffer pH 10 blue 250-210-501   250-210-502   250-210-503
Buffer pH 10 concentrate 250-210-701 250-210-702      
Buffer Set (pH 4 Red, pH7 Yellow, pH 10 Blue) 250-200-000        
Buffer TISAB with CDTA     250-200-430 250-200-431 250-200-432
Buffer TISAB concentrate with CDTA 250-200-400        
Buffer TISAB II with CDTA     250-200-460 250-200-461 250-200-462
Carbonate Buffer   250-200-490 250-200-491 250-200-492 250-200-493
Color Developer Buffer 250-170-250 250-170-251 250-170-252    
Color Dilution Buffer 250-170-275 250-170-276 250-170-277    
Mehlich Buffer Solution 250-240-510 250-240-511 250-240-512    
Phosphate Buffer, 0.05M 250-200-520 250-200-521 250-200-522 250-200-523 250-200-524
Phthalate Buffer 250-200-550 250-200-551 250-200-552*    
SMP Buffer Solution 250-240-740 250-240-741 250-240-742 250-240-743 250-240-744
Sulfide Anti-Oxydant Buffer (SAOB)   250-180-625      
        *indicates 4L Glass Bottle