Important Update

Beginning May 8, 2022, BHQ™ (Black Hole Quencher™) 1 and 2 will no longer be available as a modification to Custom DNA Oligos and Custom qPCR Probes. The replacements will be BXQ™ (Block All Quencher™) 1 and 2. Information about the BXQ dark quenchers will be added from time-to-time to key oligo landing pages up until the date of change. As these key landing pages are updated, this message will be updated to provide links to the new information. If you have any questions, please contact your local company representative.

Alternatively, to learn more about BXQ, please visit the manufacturer’s website: BXQ | AAT Bioquest.


Dual-Labeled Probes

  • Amounts: 1, 3, 5, and 10 OD
  • Purification: HPLC
  • Sequence Lengths: 15 - 40 bases
  • Modifications: Locked Nucleic Acid available
  • Dyes: Comprehensive offering of reporters and quenchers
  • Quality Control: 100% mass spectrometry
  • Format: Supplied dry in amber tubes
  • Learn more

Molecular Beacons

  • Amounts: 1, 3, 5, and 10 OD
  • Purification: HPLC
  • Sequence Lengths: 15 - 40 bases
  • Modifications: Locked Nucleic Acid available
  • Dyes: Comprehensive offering of reporters and quenchers
  • Quality Control: 100% mass spectrometry
  • Format: Supplied dry in amber tubes
  • Learn more

LightCycler® Probes

  • Amounts: 0.1, 0.25, 1.5, and 15 OD
  • Purification: HPLC
  • Sequence Lengths: 15 - 40 bases
  • Modifications: Locked Nucleic Acid available
  • Dyes: Probe 1 fluorescein (3′ end); Probe 2 phosphate (3′ end) and LC Red 610, 640, 670 or 705 (5′ end)
  • Quality Control: 100% mass spectrometry
  • Format: Supplied dry in amber tubes
  • Learn more

Scorpions® Probes

  • Amounts: 1, 5, and 5 OD
  • Purification: HPLC
  • Sequence Lengths: 30 - 60 bases
  • Modifications: Locked Nucleic Acid available
  • Dyes: Comprehensive offering of reporters and quenchers
  • Quality Control: 100% mass spectrometry
  • Format: Supplied dry in amber tubes
  • Learn more

Locked Nucleic Acid

  • Available for all Custom qPCR Probe Types
  • Increased thermal stability and hybridization specificity
  • Easier and more specific designs for problematic target sequences
  • Learn more

Black Hole Quencher™ (BHQ™)

  • Available for all Custom qPCR Probe types
  • No native fluorescence (emits heat instead of light), resulting in lower background fluorescence
  • Increased signal-to-noise ratio, providing higher sensitivity
  • Enables a wider choice of reporters for multiplexing
  • Learn more