We have put together an Absorbents Frequently Asked Questions (FAQs) document which includes the questions listed below.  To review the answers please click on the FAQ button below to open the comprehensive interacive PDF, then click on the relevant question on the title page to navigate to the corresponding answer.  

CO2 absorbents FAQs - interactive PDF

1.  What are the differences and benefits between Spherasorb and standard soda lime?

2.  What are the differences and benefits between LoFloSorb and standard soda lime?

3.  Why don’t Intersurgical absorbents contain Calcium Chloride?

4.  How long does the CO2 absorbent last?

5.  Is colour change a reliable indicator of exhaustion and when to change the CO2 absorbent?

6.  Why does the exhausted colour fade and/or disappear overnight?

7.  Can CO2 absorbents be regenerated?

8.  How does LoFloSorb absorb CO2 without any alkali hydroxide?

9.  How does LoFloSorb achieve a stable colour change?

10. Why does moisture build up, especially during low flow anaesthesia?

11.  What is the recommended disposal method for CO2 absorbent?

12.  Are there transport restrictions for CO2 absorbents?

13.  What is the benefit of a spherical shape.

14.  Are Intersurgical CO2 absorbents compatible with all volatile anaesthetics and can they be used at minimal/basal fresh gas flows?

15.  What causes reaction with volatile anaesthetics?

16.  Why do only very dry CO2 absorbents react with volatile anaesthetics?

17.  What is the critical level of dryness of the CO2 absorbent at which reactions with volatile anaesthetics can occur?

18.  Does normal use of absorbents within anaesthesia cause drying out?

19. How can drying out of CO2 absorbents be avoided?

20. Is it really necessary to use absorbents without any alkali-hydroxide to ensure safety with volatile anaesthetics?

21. What are the storage condition limits?

22. Is there a maximum time by which an absorber should be discarded regardless of degree of use?

23. Which is the better to use, Spherasorb or LoFloSorb?

24. What are the chemical reaction involved in absorbing CO2?

25. What is a Sodium Zeolite?

26. How does Sodium Zeolite act as a pH buffer in Spherasorb?

27. How does Sodium Hydroxide (NaOH) enable a greater carbon dioxide capacity compared to Alkali-hydroxide-free absorbents.

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