APPENDIX C
Calibration certificates of equipment
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H*@gEll il&16€'FAfr
ETS-TESTCONSULT
LIMITED
Performance Check / Calibration
of M
ultinarameter Water Oualitv Meter
Equiprnent
Ref. No.
Model
No.
Date
of Calibration
ET/EW008/010
Manufactuler
Serial No.
Calibration
Due Date
YSI
Pro DSS
18E105421
21612023
l/912023
Results
1. Temperatule
(Method
Reference: Section
6 of intelnation
Accleditation
New Zealand Technical Guide
no. 3 Second
edition March
2008
Working
Thermometel
Cal ibration
Tolerance
Limit
("C):
+
2.0
2,pH
Reference: APFIA
19ed 4500-H+ B)
Tolerance
Limit
(pH
unit):
+
0.10
3. Conductivity
Reference:
APFIA 19ed 2510 B)
Tolerance
Limit
(pS/cm):
+
10.0%
4. Salinity
(Method
Reference: APHA
l9ed 2520 B)
Expected
Reading
(g/L)
Displayed
Reading
(g/L)
Toletance
(o/o)
10.0
9.97
-0.3
20.0
19.68
-1.6
30.0
30.04
0.1
Tolelance
Limit
(g/L):
+
10.0%
Tolerance
(oC)
Reading
of Reference
Thermometer'
(oC)
Displayed Reading
("C)
0.1
15.6
15.7
25.2
0.1
2s.1
-0.1
29.3
29.2
Tolerance
(pl-l
unit)
Expected Readine
(pH
unit) Displayed
Reading
(pH
unit)
4.00
6.86
9.1 8
Displayed Reading
(pS/cm)
Tolemnce
(7o)
Expected Reading
(pS/cm)
145.6
+0.3
145.2
+0.6
1414
1423
+0.8
12892
13004
56393
-0.6
56761
Page
I
of2
#sHtl
ilffiffi€Eaaa
TESTCONSULT
LIMITED
R$6
ETS
L.*W
t=;#a
*W
Performance Check
/ Calibration
of Multinarameter
W
ater Oualitv Meter
Equipment
Ref. No.
Model No.
Date of Calibration
Manufacturer
Serial
No.
Calibration Due Date
ET/EW/008/010
Pro DSS
2/6/2023
U9t2023
YSI
I 8E1
05421
5. Dissolved Oxygen
Reference:
APHA 19ed
4500-0
G)
Tolerance
Limit
(mgll-):
+
0.20
6. Turbidity
(Method
Reference: APHA l9ed
2130 B
Tolerance Limit
(NTU):
x10.0%
Displayed
Reading
(ms./L)
Tolerance
(me/L)
Expected Reading
(mg/L)
+0.08
1.73
1.81
4.49
-0.1
3
4.62
-0.0s
s.91
5.86
Tolerance
(o/o)
Expected Readins
(NTU)
Displayed Reading
(NTU)
10.2
+2.0
10
+1.75
40
40.7
102.5
+2.5
100
-0.70
400
397.2
The equipment complies
#
/
dees-ne+eomply
#
with the specified
requirements
and is deemed acceptable
#
/ una€€€ptabl.e-#
for use.
u
Delet. as appropriate
Calibrated by
Approved by
/.r
6
0
l\4anaq
p
u'
(
Ll
*J Page2 of2
