Method for testing pH and catalase in liver: I am looking for materials and method for a

Method for testing pH and catalase in liver: I am looking for materials and method for a
Agar plate setting conditions, storage, inoculation and disposal: What are the factors that affect the ability of agar to set?
Litmus Paper: The Litmus paper in our lab is many years old, but has been kept dry in a dark drawer.
pH Probe: Can anyone suggest a pH probe with data logging function/capabilities for use with our senior science groups?
Enzyme preparation for experiments: Could you provide guidance in the correct preparation of enzymes such as trypsin, pepsin and amylase for enzyme digestion practical activities?
This online resource looks at factors that affect population growth in yeast.
This online resource shows how pH levels can be used to measure the respiration of cells.
In this online resource, students are introduced to pH indicators.
This online resource looks at acid-base reactions.
The resource provides a range of activities to do with some key chemical concepts relating to hair care, shampoos and conditioners.