71) Buffer Solution Hardness 1 Ph 10.1 +/- 0.1
Manufacturer: N/A Source: holycross.edu
Index Date: 2000-01-01


72) BETZ ENTEC 328
Manufacturer: BETZ
Index Date: 2006-02-07

73) BETZ ENTEC 347W
Manufacturer: BETZ DEARBORN
Index Date: 1998-05-22

74) BETZ ENTEC 347W
Manufacturer: BETZ
Index Date: 1999-01-06

75) HARDNESS INDICATOR - HARDNESS REAGENT #2; P
Manufacturer: HF SCIENTIFIC INC.
Index Date: 1992-02-14

76) BETZ ENTEC 347
Manufacturer: BETZ ENTEC INC
Index Date: 1992-01-04

77) PRE-FILM 108 L
Manufacturer: BETZ LABORATORIES INC BETZ INDUSTRIAL DIV
Index Date: 1992-09-17

78) BETZ ENTEC 733
Manufacturer: BETZ ENTEC INC
Index Date: 1994-03-28

79) BETZ ENTEC 718
Manufacturer: BETZ ENTEC INC
Index Date: 1988-10-31

80) BETZ ENTEC 735
Manufacturer: BETZ ENTEC INC
Index Date: 1991-02-16