Current assay turnaround time (TAT): 98 % less than 3 weeks
TAT Trending: Increasing

Our Services

Rock, Drill Core and Soil Sample

Sample Preparation

  • Drying of samples at 80°C in a forced air circulation system.
  • Crushing to > 80% passing 1700 microns (10 mesh) using low chrome steel jaw plates.
  • Splitting samples using a rotary splitter to obtain test samples and duplicates.
  • Pulverizing to >85% passing 74 microns (200 mesh) using low chrome steel bowl sets.
  • Re-blending of pulps (homogenizing) using a short pulverizing cycle.
  • Screening of soil samples using an 80 mesh sieve to obtain a sub-sample for assay. Oversized material is normally discarded.

Internal Quality Control

  • Size testing of crushed and pulverized material is performed daily for each equipment.
  • Ten (10) percent replicate assays are performed and reported on the certificates for fire assay gold analysis. A method blank and certified reference material are applied and reported for each furnace load to monitor the fire assay process.
  • A duplicate crushed sample is drawn at random and assayed for each work order to monitor precision.
  • Crushed limestone blanks and pulverized silica blanks are assayed daily to monitor cross contamination of samples.

Gold and Precious Metals

(Geochemical Analysis)

Fire AssayFinishDetection
Gold1 assay tonFA-AAS
5 ppb
2 ppb
Platinum1 assay tonFA-AAS
5 ppb
2 ppb
Palladium1 assay tonFA-AAS
5 ppb
2 ppb
Note: 50 g assays for the above are also available

Precious Metal Assay

(Ore Grade)

Fire AssayFinishDetection
Gold1 assay tonFA-AAS
0.01 g/tonne
Gold1 assay tonGravimetry0.30 g/tonne
Platinum1 assay tonFA-AAS
0.01 g/tonne
Palladium1 assay tonFA-AAS
0.01 g/tonne

Gold and Silver Concentrate

Fire AssayFinishDetection
Gold1 assay tonGravimetry0.30 g/tonne
Silver1 assay tonGravimetry3.0 g/tonne

Other Precious Metal Analysis

Fire AssayFinishDetection
Gold in mill solution (high grade)1 assay tonGravimetry0.30 g/tonne
Gold in mill solution (low grade)1 assay tonMP-AES0.01 g/tonne

Gold by Pulp and Metallic Sieve Analysis

Sample size up to 2 kg with a surcharge for each 100 g overweight

The pulp and metallic sieve analysis includes:

  • crushing and pulverizing the entire sample
  • screening the entire sample through a 147 micron screen
  • assaying the entire +147 micron fraction
  • duplicate assays on the -147 micron fraction
  • weighted average for Gold in the entire sample reported

Single Element Geochemical Analysis

(Aqua Regia Digestion with FAAS or MP-AES Finish)

Range (ppm)
Antimony (Sb)5 – 1,000
Arsenic (As)5 – 10,000
Beryllium (Be)0.5 – 1,000
Bismuth (Bi)5 – 1,000
Cobalt (Co)2 – 1,000
Copper (Cu)1 – 10,000
Lead (Pb)1 – 10,000
Molybdenum (Mo)2 – 10,000
Nickel (Ni)1 – 10,000
Silver (Ag)0.2 – 100
Tellurium (Te)2 – 1,000
Zinc (Zn)1 – 10,000

Storage and Disposal of Sample Rejects and Pulps

  • Monthly storage cost of reject samples after 2 months.
  • Monthly storage cost of sample pulps after 2 months.
  • Disposal cost of reject and pulp samples.


  • Monthly storage beyond the two month period is to be arranged in advance by the customer. Storage charges will apply three months after the certificate release date.
  • Customers will be contacted one month before samples and pulps are to be disposed of.
  • Shipping arrangements and costs related to the return of reject samples and sample pulps will be the responsibility of the customer.
  • Swastika Laboratories will take all reasonable precautions to protect samples, pulps, and sample rejects from receipt to final storage but will incur no liability for loss, deterioration, or damage thereto from any cause whatsoever.
  • Charges apply for the disposal of reject and pulp samples.

Sample Pick-Up Services

Swastika Laboratories Ltd. can provide a driver, truck and trailer to pick up and return samples at the customer’s site at additional cost if the one way distance is less than 300 kilometers.


Shipping labels, Analysis Requisition forms and sample tickets can be provided at additional cost.