Thermal cycler for PCR including temperature control bladder
A method for performing a polymerase chain reaction (PCR). The method comprises the step of maintaining a reaction mixture in a PCR reaction chamber alternatively at a first temperature and a second temperature using a device comprising a first heater for heating a temperature-control substance to a first temperature, a second heater for heating said temperature-control substance to a second temperature, a pump located in between and connected in series with the first heater and the second heater; and a bladder unit connected to the first and second heaters via different ports. The pump introduces the temperature-control substance into the bladder unit at the first temperature and the second temperature alternatively with a regular interval to enable the PCR.
1. A method for performing a polymerase chain reaction (PCR), comprising:
maintaining a reaction mixture in a PCR reaction chamber alternatively at a first temperature and a second temperature using a device comprising:
a first heater for heating a temperature-control substance to said first temperature;
a second heater for heating said temperature-control substance to said second temperature;
a pump located in between and connected in series with said first heater and said second heater; and
a bladder unit comprising a pair of bladders, each bladder is coupled to a bladder support and is connected to said first and second heaters via different ports,
wherein said pair of bladders are inflatable with said temperature-control substance that controls the temperature of said pair of bladders, wherein said pair of bladders are positioned in a substantially opposing arrangement with a space in between such that both bladders, when inflated, are capable of contacting said reaction chamber placed in said space,
and wherein said pump introduces said temperature-control substance into said pair of bladders at said first temperature and said second temperature alternatively with a regular interval to enable the PCR.
2. The method of claim 1 , wherein said first temperature is in the range of 80-105° C. and wherein said second temperature is in the range of 50-70° C.
3. The method of claim 2 , wherein said first temperature is about 95° C. and wherein said second temperature is about 65° C.
4. The method of claim 1 , wherein said pump introduces said temperature-control substance into said pair of bladders at said first temperature and said second temperature alternatively for 30-50 times.
5. The method of claim 1 , wherein said pair of bladders are capable of heating the reaction mixture in said PCR reaction chamber at a rate of about 15° C./sec.
6. The method of claim 1 , further comprising maintaining said reaction mixture at a third temperature.
7. The method of claim 6 , wherein said third temperature is between said first temperature and said second temperature.
8. The method of claim 6 , wherein said third temperature is substantially equal to said second temperature.
9. The method of claim 6 , further comprising maintaining said reaction mixture at a fourth temperature.
10. The method of claim 9 , wherein said fourth temperature is substantially equal to said first temperature.