About G17 Polygraph
Unwavering commitment to the truth
Johann’s journey began in the South African military, where he developed a deep respect for discipline, integrity and precision. His interest in uncovering the truth through investigation soon evolved into a professional calling. Pursuing this passion, Johann earned his qualification as a Polygraph Examiner through the American Polygraph Association, one of the most respected bodies in the world.
Since then, countless successful examinations and voluntary confessions have proven the effectiveness of his methods and helped companies, institutions and individuals find the answers they need to move forward with confidence.
At G17 Polygraph, we bring a level of reliability, thoroughness and attention to detail that sets us apart. Every examination is conducted with professionalism, confidentiality and respect – and always delivered on time.
PHOTO OF JOHANN
What sets us apart
At G17 Polygraph, we don’t just administer tests, we offer peace of mind. Our reputation is built on values that define every service we deliver:
Reliability and Punctuality: Always on time, every time.
Military-Grade Attention to Detail: 17 years of military experience informs our precision.
Highly Trained Expertise: American Polygraph Association certified.
Loyalty and Integrity: Trust and respect are at the core of everything we do.
Confidentiality: Every case is handled discreetly and professionally.
Resilience: We remain committed under pressure, always delivering accurate and fair results.
Qualifications and Clearances
Johann Delport’s extensive qualifications ensure that every examination is conducted to the highest standards:
American Polygraph Examiner Course for Law Enforcement
SAMTRAC (Safety Management Systems, NQF Level 5)
South African National Defence Force Security Clearance – Restricted
South African Police Service Criminal Clearance