Yes, in our testing we have not found any combination of the Go Direct water quality sensors that interfere with each other when connected via Bluetooth. Sensors tested include: Go Direct pH, Go Direct Conductivity, and Go Direct Ion Selective Electrodes.

For further data see:
Will I get interference when I put two sensors in the same solution?

Related TILs:
Can I use the Optical DO Probe with other water quality sensors?
Are there any interfering gases when using the Optical DO Probe?