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NITROGEN STANDARD, ( As Nitrate ), 1 mL = 1.0 mg N as NO<sub>3</sub>, 1000 ppm N, (4427 ppm NO<sub>3</sub>), Meets ASTM and EPA Specifications, (KNO<sub>3</sub> in Water ), Ricca

NITROGEN STANDARD, ( As Nitrate ), 1 mL = 1.0 mg N as NO₃, 1000 ppm N, (4427 ppm NO₃), Meets ASTM and EPA Specifications, (KNO₃ in Water ), Ricca

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CAT NO: 5459-16, 5459-4

NITROGEN STANDARD, ( As Nitrate ), Stock, 1 mL = 0.10 mg N as NO<sub>3</sub>, 100 ppm N, (442.7 ppm NO<sub>3</sub>), APHA, EPA for Nitrate, (KNO<sub>3</sub> in Water ), Ricca

NITROGEN STANDARD, ( As Nitrate ), Stock, 1 mL = 0.10 mg N as NO₃, 100 ppm N, (442.7 ppm NO₃), APHA, EPA for Nitrate, (KNO₃ in Water ), Ricca

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CAT NO: 5457-16, 5457-4

NITROGEN STANDARD, ( As Nitrate ), Stock, 1 mL = 1.0 mg NO<sub>3</sub>, 1000 ppm NO<sub>3</sub>, (226 ppm N), ASTM for Nitrate, (KNO<sub>3</sub> in Water ), Ricca

NITROGEN STANDARD, ( As Nitrate ), Stock, 1 mL = 1.0 mg NO₃, 1000 ppm NO₃, (226 ppm N), ASTM for Nitrate, (KNO₃ in Water ), Ricca

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CAT NO: 5458-16, 5458-4

NITROGEN STANDARD, ( As Nitrite ), 1 mL = 0.25 mg N as NO<sub>2</sub>, 250 ppm N, (821 ppm NO<sub>2</sub>), APHA for Nitrite Nitrogen, (NaNO<sub>2</sub> in Water ), Ricca

NITROGEN STANDARD, ( As Nitrite ), 1 mL = 0.25 mg N as NO₂, 250 ppm N, (821 ppm NO₂), APHA for Nitrite Nitrogen, (NaNO₂ in Water ), Ricca

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CAT NO: 5460-16, 5460-4

NITROGEN STANDARD, (As Ammonia), 1 mL = 0.010 mg N as NH<sub>3</sub>, 10 ppm N, (12.2 ppm NH<sub>3</sub>), ACS, APHA, EPA for Ammonia, (NH<sub>4</sub>Cl in Water ), Ricca

NITROGEN STANDARD, (As Ammonia), 1 mL = 0.010 mg N as NH₃, 10 ppm N, (12.2 ppm NH₃), ACS, APHA, EPA for Ammonia, (NH₄Cl in Water ), Ricca

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CAT NO: 5450-16, 5450-4

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