87443-8
LaboratoryHardness [Mass/volume] of Water by Calculation
Definition
Water hardness is the concentration of calcium and magnesium ions expressed as equivalents of calcium carbonate (CaCO3) and is calculated with the following formula: CaCO3 = Ca(mg/L)×2.97 + Mg(mg/L)×4.118
LOINC 6-Axis Classification
Component
Hardness
Property
MCnc
Time Aspect
Pt
System
Water
Scale Type
Qn
Method Type
Calculated
Details
Class
SPEC
Order/Observation
Both
Short Name
Hardness Wat Calc-mCnc
Display Name
Hardness Calc (Water) [Mass/Vol]
Related Names
Frequently Asked Questions
What is LOINC code 87443-8?
LOINC code 87443-8 identifies "Hardness [Mass/volume] of Water by Calculation". Water hardness is the concentration of calcium and magnesium ions expressed as equivalents of calcium carbonate (CaCO3) and is calculated with the following formula: CaCO3 = Ca(mg/L)×2.97 + Mg(mg/L)×4.118
What does 87443-8 measure?
This code measures Hardness in Water. It belongs to the SPEC class in the LOINC classification.
What is LOINC?
LOINC (Logical Observation Identifiers Names and Codes) is a universal standard for identifying laboratory and clinical observations. It is maintained by the Regenstrief Institute and used worldwide for health data exchange.