Each bottle （500 mL） is supplied with a COFRAC Verification Certificate and Certificate of Conformity and Traceability drawn up according to ISO31.

• Total Control of the traceability chain and calculated uncertainties
• Direct traceability to primary standards and the reference method
• The competence and integrity of a laboratory internationally recognized to be accredited for the measurement of pH and conductivity reference materials

  Total Control of the traceability chain and calculated uncertainties

  Direct traceability to primary standards and the reference method

  The competence and integrity of a laboratory internationally recognized to be accredited for the measurement of pH and conductivity reference materials

  Specifications

  Concentration:4.005 ± 0.010 pH bij 25 °C

  Description :traceable to IUPAC pH scale and NIST

  Footnote:¹Behalve pH 7,000 door ons geformuleerd in overeenstemming met NIST-, IUPAC- en DIN19266-specificaties van pH 6,865 en pH 7,413 ²Dansk Fundamental Metrologi A/S is geaccrediteerd voor pH-metingen door het Deense accrediteringsorgaan Danske Akkrediterings- og Metrologifond （DANAK） （nr. 255）

  NIST Traceable:yes

  Parameter:pH

  Platform :Buffer

  Quantity:500 mL

HACH DR6000紫外分光光度計，HACH DR6000多參數(shù)水質(zhì)分析儀，HACH DR6000水質(zhì)多參數(shù)分析儀
HACH DR3900便攜式分光光度計，HACH DR3900多參數(shù)水質(zhì)分析儀，HACH DR3900水質(zhì)多參數(shù)分析儀
HACH DR2800便攜式分光光度計，HACH DR2800多參數(shù)水質(zhì)分析儀，HACH DR2800水質(zhì)多參數(shù)分析儀
HACH DR900便攜式分光光度計，HACH DR9000多參數(shù)水質(zhì)分析儀，HACH DR900水質(zhì)多參數(shù)分析儀
HACH DR1900便攜式分光光度計，HACH DR1900多參數(shù)水質(zhì)分析儀，HACH DR1900水質(zhì)多參數(shù)分析儀
HACH DR1010 COD測定儀，HACH DR1010化學需氧量分析儀，HACH DR1010 COD測定儀
HACH 2100N臺式濁度儀，HACH 2100N濁度儀，哈希2100N臺式濁度儀
HACH 2100AN臺式濁度儀，HACH 2100AN濁度儀，哈希2100AN臺式濁度儀
HACH 2100Q便攜式濁度儀，HACH 2100Q濁度儀，哈希2100Q便攜式濁度儀
HACH 1900C便攜式濁度儀，HACH 1900C濁度儀，哈希1900C便攜式濁度儀