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  • Certified for environmental methods — plate counts, MPN
  • COA includes expected values for multiple methods
  • Robust — lyophilized technique ensures strong recovery, even for 44.5 ºC coliform methods
  • Unique — multi-organism CRM covers six methods in a single pellet (MIC-UNV-10)

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Wastewater

Manufactured from the highest purity water and analytically verified neat source materials. Our certified reference materials are ISO 17034 accredited.

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Drinking Water Fluoride QC Drinking Water Fluoride QC
SKU: QCI-170

Drinking Water Fluoride QC

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
Turbidity QC Check Standards 5 NTU (500 mL) Turbidity QC Check Standards 5 NTU (500 mL)
SKU: QCI-156

Turbidity QC Check Standards 5 NTU (500 mL)

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  • Brand NSI
  • Concentration 5 NTU
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
Turbidity QC Check Standards 10 NTU (500 mL) Turbidity QC Check Standards 10 NTU (500 mL)
SKU: QCI-155

Turbidity QC Check Standards 10 NTU (500 mL)

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  • Brand NSI
  • Concentration 10 NTU
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
Turbidity QC Check Standards 25 NTU (500 mL) Turbidity QC Check Standards 25 NTU (500 mL)
SKU: QCI-154

Turbidity QC Check Standards 25 NTU (500 mL)

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
Turbidity QC Check Standards 50 NTU (500 mL) Turbidity QC Check Standards 50 NTU (500 mL)
SKU: QCI-153

Turbidity QC Check Standards 50 NTU (500 mL)

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  • Brand NSI
  • Concentration 50 NTU
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
Turbidity QC Check Standards 100 NTU (500 mL) Turbidity QC Check Standards 100 NTU (500 mL)
SKU: QCI-152

Turbidity QC Check Standards 100 NTU (500 mL)

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  • Brand NSI
  • Concentration 100 NTU
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
Stable Sulfide Standard 10mg/mL Stable Sulfide Standard 10mg/mL
SKU: QCI-147

Stable Sulfide Standard 10mg/mL

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  • Brand NSI
  • Concentration 10mg/mL
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
Stable Sulfide Standard 1mg/mL Stable Sulfide Standard 1mg/mL
SKU: QCI-147L

Stable Sulfide Standard 1mg/mL

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  • Brand NSI
  • Concentration 1mg/mL
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
Perchlorate Concentrate - Blind Perchlorate Concentrate - Blind
SKU: QCI-146B

Perchlorate Concentrate - Blind

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
Perchlorate QC Concentrate CRM Perchlorate QC Concentrate CRM
SKU: QCI-146

Perchlorate QC Concentrate CRM

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
Hardness QC (4 x 250 mL) Hardness QC (4 x 250 mL)
SKU: QCI-145C

Hardness QC (4 x 250 mL)

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/ICP Confirmation
Hardness - Blind Hardness - Blind
SKU: QCI-145B

Hardness - Blind

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/ICP Confirmation
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