Appendix I

Calibraon cerﬁcates of equipment used

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ETS-TESTCONSULT

LI M ITED

Performance Check /

C

alibration of Multinarameter

W

ter Oualitv Meter

Equipment

Ref.

No.

Model

No.

Date of Calibration

ET/EWO08/010

Manufacturer

Serial

No.

Caliblation Due

Date

YSI

Pro DSS

18E105421

3/312023

2/612023

Results

l Tempelature

(Method

Reference: Section

6 of

intelnation

Accreditation

New Zealand

Technical

Guide

no. 3 Second

edition March 2008

Thermometer

Calibration

Procedure)

Tolelance

Limit

("C):

+

2.0

2.pH

Reference:

APHA

19ed

4500-H*

B

Tolerance

Limit

(pH

unit):

+

0.10

3. Conductivity

Reference:

APHA

19ed 2510

Tolerance

Limit

(pS/cm):

+

10.0%

4. Salinity

Reference: APHA

19ed 2520

Tolerance Limit

(g/L):

+

10.0%

Tolerance

("C)

Displayed

Reading

("C)

Reading

of

Reference

Thel'mometer

('C)

-0.1

15.5

15.6

-0.1

25.0

25.1

-0.2

29.1

29.3

Tolerance

(pH

unit)

Displayed

Reading

(pH

unit)

Expected

Reading

(pH

unit)

4.00

6.86

9.18

Tolerance

(%)

Displayed

Reading

(prS/cm)

Expected

Reading

(pS/cm)

+0.4

145,8

145.2

+0.5

1421

1414

+0.7

12992

12892

-0.7

56343

s6761

Tolerance

(%)

Displayed

Reading

(g/L)

Expected

Reading

(g/L)

-0.6

9.94

10.0

-1.4

19.73

20.0

-0.1

29.97

30.0

Page 1 of2

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ETS.TESTCONSULT

LI MITED

Performance Check

/ Calitrration of Multinarameter

W

ater Oualitv Meter

Equipment

Ref. No.

Model

No.

Date

of Calibration

ET/8W008/010

Manufacturer

Serial

No.

Calibration

Due Date

YSI

Pro DSS

1 8E1 05421

3/312023

216t2023

5.

Dissolved

Oxygen

(Method

Reference:

APHA

19ed

4500-0 G

Tolerance

Limit

(mg/L):

t 0.20

6.

Turbidity

Reference:

APHA

l9ed

2130 B)

Tolerance

Limit

(NTU):

t

10.0%

Tolerance

(mdl)

Displayed

Reading

(ndt')

Expected

Reading

(ne/L)

+0.11

1.84

1.73

-0.14

4.48

4.62

-0.08

5.83

5.91

Tolerance

(%)

Displayed

Reading

(NTU)

Expected

Reading

(NTU)

+3.0

10.3

l0

-0.5

39.8

40

+1.3

101.3

100

-0.97

396.1

400

The equipment

complies

n

I a""**"+*"roply

#

with the specified

requirements

and is deemed

acceptable

#

/

ur+aeeeptab+,+#

for use.

n

D.l.t. as

appropriate

Calibrated

by

ffir"

Approved

by

Page2

of2

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ETS.TESTCONSULT

LTD;

Performance

Gheck

of Water

Depth

Gauge

Equipment Ref.

No

Model No.

Date

of Check

Manufacturer

ETlEW10021012

SM-5

7691

6

Serial

No.

14-Jun-2023

15-Dec-2022

Due

Date

Speedtech

1

A rope was

marked of

lengths by

using a

calibrated

measuring tap

for every

1Ocm intervals.

2

lrhe initial

point

of the

rope

was connected

with a mass of

lead so that

it was lowered

into the

water

3

When the

rope reach

the bottom

of the

seabed,

read the mark

in the

rope to the

nearest Scm.

4

Use the

water depth

gauge

to

measure

the result

at the same

position.

5

Repeat measuring

for total 3 times

and

use the

mean value to

calculate

the

percentage

error.

6

3 different

measuring

should be

check

to cover the

depth

for normal operation.

Method

Calibration

Due Date

24-Jun-2023

Calibrated

Measuring

Tape

Equipment

Ref. No. ETt2010105

Range

(m)

Reading

by

Measuring

Tape

(m),

Dr

Reading

by Water

Depth

Gauge

(m),

Dx

Percentage

Error

(%)

^

Result

#

0-5m

3.75 Mean

3.7

Mean

2.1%

Accept

3.90

3.88

3.8

4.00

3.9

5-10m

7.30

Mean

7.3

Mean

0.6%

Accept

7.85

7.78

7.9

7.83

8.20

8.3

10

-

20m

12.55

Mean

12.7

Mean

1.3%

Accept

12.75

12.90

12.9

13.07

13.40

13.6

^

Percentage

Error,

(%)

=

(

|

Dx

-

Dr

| )

/

Dr

)

x

100%

Resu/fs

Acceptance

Criteria

# Result

accept

if Percentage

Error

<

10o/o, otherwise

reject.

The

Water Depth

Gauge complies

*

/4€e€-n€+-€€'mp{y

*

with the

specified

requirements

and

is deemed

acceptable

*

/-unaeeeptable-*

for

use.

*

Delete as appropriate

Approved

by

Checked by

6--!-/

*\:.,';S-

[-,*f#

\*#

\*".

***4rxll

ilffirda'RAa

ETS-TESTCONSULT

LI M ITED

Form

E/CE/L/l 5/lssue 2 vl

lnternal

Calibration &

Performance

Check of

pH

Meter

Equipment

Ref. No

Model No.

Date of Calibration

Manufacturer

Serial No.

Calibration

Due Date

HANNA

lnstruments

ETtEW1007l011

J0046801

Ht 9125

61312023

5t4t2023

Liquid

Junction

Error

Primary Standard

Solution

Used

Temperature

of Solution

:

pH

value of diluted

buffer :

(Observed

Deviation)

0.005 / 0.010

Liquid

Junction

Error

(ApH;)

=

ApH

-

LpH,

=

Ref

No. of Primary

Solution:

003/5.3/8

PH

(S)

=

9.225

/ 9.180

ApH

=

pH(S)- pH

of

diluted buffer

=

0.005

/ 0.020

Borax

9.22

t9.20

19.9

125.1

LPH

u=

0.01

Shift

on Stirring

pH

of buffer

solution

(with

stirring),

pH"

=

Shift

on stirring,

ApH"=

pH"

-

pH(S)

-

ApH,

=

9.21 t9.18

0.015 /

0.000

Noise

Noise, ApHn

=

difference

between max

and min reading

0.01 / 0.01

Ref. No. of reference

thermometer

used:

Temperature

record

from the reference

thermometer

(Tp)

Temperature

record from

the ATC

(T416):

Temperature

Difference,

lt*

-

tor"

I

Correction

C

c

C

Verification

of ATC

25.2

20.2 I

25.1

20.1 I

0.1 I

0.'1

0.1 I

0.1

o

ETtO521t025 I

ET105211030

o

Performance Characteristic

Acceptable

Range

Liquid Junction

Error

^pHj

<0.05

Shift on

Stirring

ApHs

<0.02

Noise

ApHn

<0.02

Verifcation of ATC

Temperatu

re Difference

<0.50c

Acceptance

Criteria

The

pH

meter complies

*

/ d€es

not €€mply

*

with the specified

requirements

and is deemed

acceptable

*

/

{+n€€€eptable

"

for use. Measurements

are traceable

to national

standards.

*

Delete

as appropriate

Checked

by

Calibrated

by

?{

cPE/01

!=*=;r'l

].'*ter:'i

\.-**

H*FSXlI

ilFH€.FAA

ETS.TESTCONSULT

LI

M ITED

Fom

E/CE/L/15/lssue 2

lnternal

Calibration

& Performance

Check

of

pH

Meter

Equipment

Ref.

No.

Model

No.

Date of Calibration

Manufacturer

Serial

No.

Calibration Due

Date

HANNA

lnstruments

ETtEW|OOTl0ll

J0046801

Ht 9125

6t3t2023

7t212023

Liquid

Junction

Error

Primary

Standard

Solution

Used

Temperature

of Solution

:

pH

value of diluted

buffer

:

(Observed

Deviation)

Liquid Junction

Error

(lpHi)

=

ApH

-

LgHu=

0.005

/ 0.000

Ref

No. of

Primary Solution:

00315.317

PH

(S)

=

9.225 / 9.180

ApH=pH(S)-pH

of

diluted buffer

=

0.005

/ 0.010

Borax

19.8

t24.9

9.2319.19

LgH

u=

0.01

Shift

on Stirring

pH

of buffer

solution

(with

stirring),

PH,

=

Shift

on stirring,

AFH,=

pH"

-

pH(S)

- ApH,

=

9.22 t9.18

0.010

/ 0.000

Noise

Noise,

ApHn

=

difference between

max and

min reading

0.00

/ 0.02

Ref.

No.

of

reference

thermometer

used:

Temperature

record

from the

reference thermometer

(Tp)

Temperature

record

from the

ATC

(Ta16):

Temperature

Difference,

lT*

-

Tor"

I

Correction

c

Verification

of ATC

20.2

I

25.1

24.9

20.3

I

0.1

I

0.2

0.1 I

o

0.2

ETt0521t025

I ETl0s211030

o

Performance

Characteristic

Acceptable

Ranqe

Liquid

Junction

Error

ApHj

<0.05

Shift

on Stirrins

ApHs

<0.02

Noise

ApHn

<0.02

Verifcation

of ATC

Temperature

Difference

<0.50c

Acceptance

Criteria

The

pH

meter complies

*

/ d€es n€t

€emply

*

with the specified

requirements

and is deemed

acceptable

"

/

un€€€eptable

*

for use.

Measurements

are

traceable to

national standards.

*

Delete as appropriate

Checked

by

Calibrated

by

W