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Suppliers / distributors of general ph buffer solutions and specialty ph buffers like Silver Nitrate, Sodium Acetate, Sodium Arsenite, Sodium Bromide, Sodium Carbonate, ...
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Safranine 0.5% Aqueous
         S-126 500ml         21.60

Safranine 1% Aqueous
         S-130 100ml         7.27

Safranine Counterstain
    Gram Stain No. 4 (For Gram Method)
       S-120 100ml         6.72
         S-120 500ml         9.01
         S-120 liter           13.56

Salicylic Acid 1% in 20% Acetone
        SX-1044 liter        12.55

Salt Spray, Neutral
    5% Sodium Chloride Solution (Meets Specifications of ASTM B-117)
    Adjusted to pH 7.0
      SX-1003 20 liter         26.87 
          SX-1003 200 liter     134.89

Sand Equivalent Stock Solution
        S-103 liter             14.68
        S-103 20 liter      160.23

Schiff's Reagent
    Fuchsin-Sulfurous Acid for Formaldehyde (Meets Specifications of ASTM D-2982)
        S-136 500ml         8.59

Seawater, Synthetic
    APHA
        S-100 4 liter         38.00

Seawater, Acidified Synthetic
    (Meets Specifications of ASTM G-85/A-3)
        S-101 20 liter       43.95

Silver Nitrate 1%
    10 grams per liter (Meets Specifications of ASTM E-360)
        S-148 liter          25.31

Silver Nitrate 2% W/V
        SX-976 500ml         22.95
        SX-976 liter             42.35
        SX-976 4 liter        136.81

Silver Nitrate 5% W/V
        SX-942 500ml         38.86
        SX-942 liter             73.43
               SX-942 4 liter        225.02

Silver Nitrate 6.8% W/V
    68 grams per liter
        S-198 20 liter      1154.47

Silver Nitrate 10% W/V
    100 grams per liter
        S-145 500ml         53.02
        S-145 liter           101.80
        S-145 4 liter        374.64

Note - Silver Nitrate M=N

Silver Nitrate 0.001 N
    (Meets Specifications of ASTM D-2384)
        S-150 liter         13.20

Silver Nitrate 0.01 N
    0.01 M
        SX-979 liter         13.20
        SX-979 4 liter      35.36
        SX-979 20 liter   95.51

Silver Nitrate 0.01 N in Methanol
        S-154 4 liter         67.85

Silver Nitrate 0.0141 N
    APHA for Chlorine
        S-155 500ml         8.41
        S-155 liter           11.32
        S-155 4 liter        32.51
        S-155 20 liter      95.51

Silver Nitrate 0.0171 N
    1ml=1mg NaCl
        S-175 liter             12.12
        S-175 4 liter          42.06
        S-175 20 liter      104.79

Silver Nitrate 0.0192 N
    APHA for Cyanide (Meets Specifications of ASTM D-2036)
        S-158 500ml         9.15
        S-158 liter           12.70
        S-158 4 liter        44.00

Silver Nitrate 0.02 N
        SX-910 liter          12.70
        SX-910 4 liter       44.00
        SX-910 10 liter    69.06
        SX-910 20 liter  118.15

Silver Nitrate 0.02 N in Methanol
        S-162 4 liter         131.98

Silver Nitrate 0.025 N
        SX-950 liter         13.64
        SX-950 4 liter      45.75

Silver Nitrate 0.0282 N
    1ml=1mg Cl-
        S-160 500ml         9.46
        S-160 liter           13.64
               S-160 4 liter        52.32
        S-160 20 liter    212.46

Silver Nitrate 0.05 N
    N/20
        S-185 500ml         13.10
        S-185 liter             21.38

Silver Nitrate 0.1 N
    N/10 
        S-190 500ml         17.50
        S-190 liter            23.43 
              S-190 4 liter         87.96
               S-190 10 liter     170.05
        S-190 20-liter     319.25

Silver Nitrate 0.1 N in Isopropanol
    (Meets Specifications of ASTM D-3227)
        SX-914 liter         34.14

Silver Nitrate 0.141 N
    1ml=5mg Cl-
        S-165 500ml         21.24 
              S-165 liter             38.14
        S-165 4 liter        129.53

Silver Nitrate 0.153 N
        S-192 500ml         22.10
        S-192 liter             40.92
        S-192 4 liter        142.59
        S-192 10 liter      315.91
        S-192 20-liter      627.39

Silver Nitrate 0.171 N
    1ml=10mg NaCl
        SX-951 500ml         23.96
                SX-951 liter             42.76
               SX-951 4 liter         150.64
        SX-951 20 liter       642.10

Silver Nitrate 0.2 N
        SX-1043 liter         49.35


Silver Nitrate 0.25 N
    N/4
     S-196 500ml         39.00
        S-196 liter             63.23
        S-196 4 liter         226.71

Silver Nitrate 0.28 N
    APHA for Salinity
        S-169 4 liter         246.98


Silver Nitrate 0.282 N
    1ml=10mg Cl
        S-170 500ml         39.33
        S-170 liter             68.21
               S-170 4 liter        255.17

Silver Nitrate 0.5 N
    N/2
        S-200 500ml         62.52
        S-200 liter           120.76
        S-200 4 liter        442.02

Silver Nitrate 1.0 N
             S-195 500ml         111.12
        S-195 liter             221.93

Sodium Acetate 10% W/V
    100 grams per liter (Meets Specifications of ASTM E-120)
        S-719 500ml         7.27

Sodium Acetate 15% W/V
        S-816 10 liter         67.26

Sodium Acetate 20% W/V
        SX-913 liter         12.11
        SX-913 4 liter      38.46

Sodium Acetate 30%W/V
        S-818 liter           10.76
        S-818 4 liter        46.52

Sodium Acetate 50% W/V
    (Meets Specifications of ASTM E-50, Reagent # 127)
        S-850 500ml         25.78

Sodium Acetate 2.0 M
        S-883 500ml         10.37

Sodium Acetate-Acetic Acid Buffer
    (Meets Specifications of ASTM D-3341)
        S-897 liter             10.28
        S-897 4 liter          23.87

Sodium Acetate Buffer Solution
    Sodium Acetate 13.6% in 0.7% Acetic Acid (Meets Specifications of ASTM E-738-80)
        S-717 500ml         7.83
        S-717 liter            10.70

Sodium Acetate-Acetic Acid Buffer
    Sodium Acetate 27% in 24% Acetic Acid (Meets Specifications of ASTM E-46)
        S-715 500ml 13.40
        S-715 liter 21.81
        S-715 4 liter 74.14   

Sodium Arsenite 0.1 N
    N/10 (APHA for Residual Chlorine)
        S-216 500ml         12.44

Sodium Arsenite 0.5% W/V
    APHA for Fluoride and Chlorine
        S-220 500ml         7.74

Sodium Bicarbonate 5.5% W/V
    APHA for Chlorine Dioxide
             S-223 liter          11.69

Sodium Bicarbonate, Saturated Solution
        SX-1087 liter        13.97

Sodium Bisulfite 10% W/V
        APHA for Manganese
        S-740 4 liter         49.84

Sodium Bisulfite 20% W/V
        SX-1231 4 liter    72.03

Sodium Borate 4% W/V
    40 grams per liter (Meets Specifications of ASTM D-1942) pH Adjusted to 9.5
        S-702 liter            9.26

Sodium Bromide 5.0 N
        SX-1068 liter       48.97

Sodium Bromide 10%W/V
        S-225 4 liter         55.88

Sodium Carbonate 0.02 N
        *Keep Refrigerated
        SX-943 500ml         7.40
        SX-943 liter           12.72

Sodium Carbonate 0.0455 N
    APHA for Carbon Dioxide (*Keep Refrigerated)
        Shelf life=30 days
        S-240 500ml         7.40
        S-240 liter            12.72
        S-240 4 liter         29.72

Sodium Carbonate 0.05 N
(*Keep Refrigerated)
        SX-1020 500ml         7.40
        SX-1020 liter           12.72

Sodium Carbonate 0.1 N
    N/10 (*Keep Refrigerated)
        S-245 liter         12.72
        S-245 4 liter      29.72

Sodium Carbonate 0.2 N
        S-241 liter            14.23
        S-241 4 liter         43.75

Sodium Carbonate 0.5 N
             S-242 liter         18.53

Sodium Carbonate 1.0 N
        S-248 500ml         11.77
        S-248 liter             18.53
        S-248 4 liter          49.90
        S-248 10 liter       76.81
        S-248 20 liter     120.53

Sodium Carbonate 2.0 N
            S-250 500ml         12.91
            S-250 liter             22.54
            S-250 4 liter          64.16

Sodium Carbonate 3.0 N
        SX-1017 liter        31.73
        SX-1017 4 liter     75.28

Sodium Carbonate 4.0 N
        S-694 liter             35.35
         S-694 4 liter         93.61

Sodium Carbonate
    1ml=1mg CaCO3 (Meets EPA Specifications for Alkalinity) *Keep Refrigerated
        S-235 500ml         7.91
        S-235 liter           11.84

Sodium Carbonate 5% W/V
    50 grams per liter (APHA for Residual Chlorine)
        S-228 4 liter        38.52

Sodium Carbonate Test Solution 10.6% W/V
    USP/NF
        S-227 500ml         10.55

Sodium Carbonate 20% W/V
        S-234 500ml         12.37
        S-234 liter             22.19

Sodium Chloride 0.2% W/V
    2 grams per liter (Meets Specifications of ASTM E-34)
        S-262 500ml         6.71
        S-262 liter             8.07
        S-262 20 liter      44.84

Sodium Chloride 0.85% W/V
    Normal Saline (Non Sterile)
        S-263 500ml         6.72

Sodium Chloride 0.9% W/V
    Isotonic Saline (Non Sterile)
        S-264 500ml         6.72
        S-264 liter             8.07

Sodium Chloride 1% W/V
        SX-968 4 liter     16.79

Sodium Chloride 2% W/V
    20 grams per liter (Meets Specifications of ASTM D-3590) Saline Diluent
           S-251 500ml         7.12
        S-251 liter             8.54
        S-251 4 liter        19.88

Sodium Chloride 3% W/V
        S-274 4 liter         24.80

Also See ** Salt Spray, Neutral
for 5% Sodium Chloride (ASTM B-117)

Sodium Chloride 5% W/V
    50 grams per liter (Meets Specifications of ASTM D-2187)
        S-252 500ml         7.12
        S-252 liter            11.41
        S-252 4 liter         24.80

Sodium Chloride 10% W/V
    100 grams per liter (Meets Specifications of ASTM D-1782 and D-2198)
        S-258 500ml         7.12
        S-258 liter           11.41

Sodium Chloride 30% W/V
    APHA for Nitrate
        S-257 4 liter         46.48

Sodium Chloride 0.1 M
    Chloride Molarity Standard (For Selective Electrodes)
        S-828 500ml         24.24
        S-828 liter             35.64

Sodium Chloride 1.0 M
        S-249 liter             13.18
        S-249 4 liter          31.13
        S-249 20 liter        97.53

Sodium Chloride 5.0 M
    Ionic Strength Adjustor for Potassium Ion Specific Electrode (Meets Specifications of ASTM D-4130)
        S-261 liter             16.77

Sodium Chloride 0.0141 N
    APHA for Chloride
        S-259 500ml         10.11
        S-259 liter             14.26

Sodium Chloride 0.025 N
    (Meets Specifications of ASTM D-512 and D-2187)
        S-260 500ml         10.11

Sodium Chloride 0.0282 N
        SX-998 500ml      10.11
        SX-998 liter          14.26

Sodium Chloride 0.1 N
    N/10
        S-265 liter         14.26

Sodium Chloride, Saturated Solution
         S-723 liter         18.08

Sodium Chloride-Hydroxyamine Sulfate
    120 grams per liter (APHA for Metals)
       S-267 500ml         28.08
         S-267 liter             48.33

Sodium Chromate 1% W/V
      SX-1072 500ml         10.25
         SX-1072 liter             17.53

Sodium Chromate 2% W/V
       S-268 100ml           6.72
         S-268 500ml         10.65
         S-268 liter             17.82

Sodium Chromate 3% W/V
      SX-996 500ml         11.97
        SX-996 liter             21.41

Sodium Chromate 5%W/V
       SX-986 500ml         14.26
         SX-986 liter             24.95

Sodium Chromate 10% W/V
        S-810 500ml         22.81
         S-810 liter             39.92
         S-810 4 liter        147.24

Sodium Citrate 3% W/V
         S-280 500ml         6.72

Sodium Citrate 3.8% W/V Aqueous
    For Sedimentation Rate of Erythrocytes
        S-282 100ml         6.72

Sodium Citrate 30%W/V
    APHA for Copper by the Bathocuproine Method
         S-285 500ml         14.26
             S-285 liter             24.24

Sodium Citrate 50% W/V
    (Meets Specifications of ASTM E-39)
        S-858 500ml 21.68
           S-858 liter 33.29

Sodium Citrate 0.1 M
         S-275 500ml         9.23
             S-275 liter            12.65

Sodium Citrate Solution
    APHA for Copper by the Neocuproine Method (Contains: Sodium Citrate, Hydroxylamine Hydrochloride, Neocuproine and Extract with Chloroform)
        S-270 500ml         38.49

Sodium Cyanide 10% W/V
        100 grams per liter (Poison Pack May be Required for Shipping)
         S-300 500ml         15.06
         S-300 Liter           23.75

Sodium Cyanide 20% W/V
    200 grams per liter (Meets Specifications of ASTM E-478) Poison Pack May be Required for Shipping
        S-296 500ml         21.81

Sodium Cyanide Indicator
    Contains: Potassium Iodide and Ammonium Hydroxide
        SX-963 liter            11.26
          SX-963 4 liter         24.24
          SX-963 20 liter     106.94

Sodium Dodecyl Sulfate 1%
         SX-1257 4 liter         24.04
            SX-1257 20 liter     280.40

Sodium Dihydrogen Phosphate 1.0 M
    APHA for Cyanide (*Keep Refrigerated)
        S-315 liter             30.37

Sodium Fluoride
    Approximately 6% (Meets Specifications of ASTM E-536-84)
        S-343 500ml         20.38
          S-343 liter             35.76

Sodium Fluoride 10% W/V
       SX-953 500ml         21.09
         SX-953 liter             40.46
         SX-953 4 liter        100.40

Sodium Fluoride 0.1 M
    Fluoride Molarity Standard
        S-340 500ml         24.24
          S-340 liter             35.64

Sodium Gluconate 5% W/V
         SX-957 liter         19.03

Sodium Hydroxide Diluent Solution 0.16%
    APHA for Cyanides
        S-362 liter             8.54
          S-362 4 liter        18.68

Sodium Hydroxide 1% W/V
        APHA for Total Cyanide
        S-357 liter             8.54
           S-357 4 liter        18.68

Sodium Hydroxide 1.25% W/V
        SX-928 20 liter         66.56

Sodium Hydroxide 3% W/V
         SX-1074 liter         8.61

Sodium Hydroxide 4% W/V
         S-371 liter             8.72    
            S-371 4 liter        21.95

Sodium Hydroxide 5% W/V
        APHA for Cyanide
         S-358 500ml         6.94
         S-358 liter             8.72
         S-358 4 liter         21.95

Sodium Hydroxide 8%W/V
         S-419 4 liter         21.95

Sodium Hydroxide 10% W/V
       S-360 500ml         7.06
         S-360 liter             8.96
         S-360 4 liter         25.69
         S-360 20 liter       83.85

Sodium Hydroxide 15% W/V
         SX-1063 liter             10.96
             SX-1063 4 liter          26.34

Sodium Hydroxide 18% W/V
         S-423 4 liter         27.38

Sodium Hydroxide 20% W/V
         S-365 500ml         7.22
         S-365 liter           11.28
         S-365 4 liter        28.17
         S-365 20 liter      91.24

Sodium Hydroxide 20% W/W
        S-368 liter            12.23
         S-368 4 liter         32.18

Sodium Hydroxide 30% W/V
       S-369 liter         12.27
         S-369 4 liter      37.14
         S-369 10 liter    50.62
         S-369 20 liter    73.81

Sodium Hydroxide 35% W/V
    (Meets Specifications of ASTM E-210)
      S-498 500ml         11.90
         S-498 liter             14.31

Sodium Hydroxide 40% W/V
       SX-908 500ml         11.88
         SX-908 liter             14.31
         SX-908 4 liter          44.58
         SX-908 20 liter       112.30

Sodium Hydroxide 40% W/W
    For Kjeldahl Nitrogen
       S-378 4 liter         45.46
         S-378 20 liter     114.81

Sodium Hydroxide 50% W/V
       S-372 500ml         11.90
         S-372 liter             14.31
         S-372 4 liter          44.58
         S-372 10 liter        59.02
         S-372 20 liter      112.30

Sodium Hydroxide 50% W/W
    For Kjeldahl Nitrogen
            S-375 liter            9.26
         S-375 4 liter       21.03
         S-375 10 liter     48.27
         S-375 20 liter     74.50

Sodium Hydroxide 50% W/W
    ACS Reagent Grade (Meets Specifications of ASTM D-3327)
         S-380 500ml         15.33
         S-380 liter             21.95
         S-380 4 liter         55.76
         S-380 10 liter     117.85
         S-380 20 liter     171.38

Sodium Hydroxide 0.01 N
    N/100
       S-440 500ml         6.72
         S-440 liter             8.54
         S-440 4 liter         24.21
         S-440 10 liter       39.88
         S-440 20 liter       61.28

Sodium Hydroxide 0.02 N
    N/50
       S-445 500ml         6.72
         S-445 liter             8.54
         S-445 4 liter        24.21
         S-445 20 liter      61.28

Sodium Hydroxide 0.0227 N
       S-460 liter             8.54
         S-460 4 liter        24.21
         S-460 20 liter      61.28

Sodium Hydroxide 0.025 N
         S-349 4 liter         24.19

Sodium Hydroxide 0.04 N
    1.6 grams per liter (Meets Specifications of ASTM D-4165)
       S-459 500ml         6.72
         S-459 liter             8.54

Sodium Hydroxide 0.04 N in Isopropanol
         S-471 500ml         15.12 
            S-471 liter             24.88

Sodium Hydroxide 0.05 N
         S-450 500ml         6.72
         S-450 liter             8.53
         S-450 4 liter        24.21
         S-450 10 liter      39.88
         S-450 20 liter      61.28

Sodium Hydroxide 0.0833 N
         SX-1128 20 liter     61.22

Sodium Hydroxide 0.0866 N
       S-461 500ml         7.12
         S-461 liter             8.53
         S-461 4 liter        24.21

Sodium Hydroxide 0.1 N
    N/10 (Meets Specifications of ASTM D-3859) 4 grams per liter
           S-465 500ml         6.72
           S-465 liter            8.53
         S-465 4 liter       24.21
         S-465 10 liter     39.88
         S-465 20 liter     61.28

Sodium Hydroxide 0.1 N in Ethanol
          S-350 liter         14.12
         S-350 4 liter     44.46


Sodium Hydroxide 0.1 N in Methanol
          S-476 4 liter         44.46
          S-476 10 liter       64.21

Sodium Hydroxide 0.1142 N
          SX-964 4 liter     24.24

"S"  page #2