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Reliable
Cheap
Durable
Sensors
Sensors are at the centre for monitoring bioreactors. pH is the most important parameter to monitor and control next to temperature followed by dissolved oxygen to maintain certain levels of oxygenation or redox to check absence of oxygen.
pH sensors
Pros
​+ Broadley James
+ More reliable / longer lifespan / cheaper when compared to:
AppliSens
Hamilton
Mettler Toledo
​
Cons
- Fragile (made of glass)
- Storage in 3 M KCl
- Not suitable for liquid handling
Dissolved oxygen
Pros
​+ Strong steel housing
+ More reliable / longer lifespan / cheaper when compared to:
AppliSens
Hamilton
Mettler Toledo
Cons
- Sensitive caps
- Electrolyte needs regular replacement (100 mM KCl/ 100 mM KOH)
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