Rosemount 54E - Page 49

MODEL 54e pH/ORP SECTION 5.0
SOFTWARE CONFIGURATION
5.9 AUTO CALIBRATION SETUP (continued)
Buffer Value @ 25°C Standards Referenced Buffer Composition Factory Configured
1.68 NIST, DIN 19266, JIS 8802 0.05M K tetroxalate
3.56 NIST, BSM KH tartrate (sat’d @ 25°C)
3.78 NIST 0.05M KH
2
citrate
4.01 NIST, DIN 19266, BSM, JIS 8802 0.05 KH Phthalate X
4.64 BSM 0.1M HOAc
.01M NaOAc
6.86 NIST, DIN 19266, BSM, JIS 8802 0.025M KH
2
PO
4
0.025M KH
2
HPO
4
7.00 0.05M NA
2
HPO
4
X
0.05M KH
2
PO
4
7.41 NIST, JIS 8802 0.0087M KH
2
PO
4
0.0302M KH
2
HPO
4
9.18 NIST, DIN 19266, BSM, JIS 8802 0.01M Na
2
B
4
O
7
10.01 NIST, BSM, JIS 8802 0.025M NaHCO
3
X
0.025M Na
2
CO
3
12.45 NIST, DIN 19266 Ca(OH)
2
(sat’d @ 25°C)
TABLE 5-2. Standard Buffers
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