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Thomas pH Meters & Supplies
Thomas Orbital Shakers
Description:APHA Solution, 1 mL=1 mg N
Catalog #
C543D20
C543D23
Description:Standard, 1 mL = 1 mg NO3-, 1000 ppm Nitrate (226 ppm N)
C027B24
Description:Standard, 100 ppm, 1 mL = 0.1 mg N
C543D50
C543D55