Distillate deposition was uniform at every position in the FX-8 drum. Across six samples pulled from top and bottom rows, front to back, distillate per gram of flower varied 2.6% RSD, and every position landed within ±5% of the batch mean.
That meets the acceptance criteria used for pharmaceutical powder-blend uniformity with room to spare. Two independent tracers gave the same answer, and the measured spread sits at the resolution limit of a single third-party HPLC test: the machine is at least as uniform as the lab can resolve.
White paper · Detroit Dispensing Solutions · Prepared by Chris Joseph · September 2026
RESULT
2.6%
RSD of distillate deposition across six drum positions
±5%
Every position within 5% of the batch mean (range 97.6 – 104.7)
Pass
Pharmaceutical blend-uniformity criteria: RSD ≤ 5%, all samples within 90 – 110% of mean
Planning infused pre-rolls or infused flower? See what the FX-8 would earn on your prices and weekly volume with the FX-8 ROI calculator, or work out how much distillate, rosin or kief to add for your target potency with the infusion potency calculator.
Prefer to talk it through? Call us at +1 947 941-4489.
Get an FX-8 quote See the FX-8 flower infusion machine
Why uniformity matters
An infused pre-roll is sold on one labeled potency, and every unit in the batch has to earn it. Uneven infusion produces hot and cold units from the same drum: label claims that miss on retest, an inconsistent consumer experience, and a batch whose average hides its spread. Spray uniformity decides whether the labeled potency describes one unit or all of them.
Test description
One production batch of milled flower was infused on the FX-8 at a customer site and sampled at six points in the drum after the run. Every sample went to the same independent lab in one submission.
| Site | Licensed Michigan processor, live production run |
|---|---|
| Machine | DDS FX-8 |
| Material | Milled flower, single batch, infused with a distillate and terpene blend |
| Sampling | Six samples pulled from the drum after the run: top and bottom rows at front, middle and back |
| Lab | PuEr Lab, Warren, MI — independent, state-licensed (AU-SC-000121) |
| Method | HPLC-PDA cannabinoid potency (Shimadzu, method CHEM-001) |
| Reports | Samples received Sept 9, 2026; results issued Sept 10, 2026. |
How uniformity is measured
The question is whether every gram of flower received the same amount of distillate. The chemistry gives a direct way to answer it.
Distillate is fully decarboxylated: it carries Δ9-THC and essentially no THCa or CBGa. Flower is the opposite — its cannabinoids are mostly in the acid form. So in the finished product, Δ9-THC comes from the spray and THCa comes from the flower. The ratio of Δ9-THC to THCa in any sample is the distillate loading on that sample's flower. If the spray were uneven, that ratio would swing from position to position. CBGa, another flower-only acid, gives a second, independent check.
Δ9-THC
comes from the spray
÷
THCa
comes from the flower
=
Distillate loading
on that sample's flower
Why total potency alone gives the wrong picture. A one-gram sample of milled flower is not a fixed amount of flower. Fines, moisture and trichome density vary from grab to grab, and that variation moves every cannabinoid in the sample together — distillate included. Reading total THC per sample mixes the flower's own variation with the machine's. The ratio strips the flower out and isolates what the FX-8 controls.
Reading the numbers
RSD (relative standard deviation) is the spread of a set of measurements expressed as a percentage of their average: standard deviation divided by mean. An RSD of 2.6% means a typical sample sits within about 2.6% of the average, and the extremes within roughly twice that. Lower is more uniform.
Pharmaceutical blend-uniformity criteria are the test a powder blend must pass before it can be pressed into tablets or filled into capsules — the standard for making every dose the same. The widely applied acceptance criteria, set out in FDA guidance and still in common use, are:
- RSD across the blend samples ≤ 5.0%
- Every individual sample within 90.0 – 110.0% of the mean
Lab resolution. A single HPLC potency test carries its own repeatability of roughly 2 – 3% RSD. Any process reading at or below that level is at the floor of what one round of third-party testing can distinguish.
Results
Every drum position passed both criteria on both tracers. The deposition index is each sample's Δ9-THC ÷ THCa ratio (and Δ9-THC ÷ CBGa for the second tracer) expressed against the six-sample mean, with the mean set to 100. A value of 104.7 means that position carried 4.7% more distillate per unit of flower than the batch average.
Deposition index at six drum positions. The full spread from lowest to highest position is 7 points on a scale where the pass window is 20 points wide. The two tracers agree on the high position (bottom front) and the low position (bottom back), which confirms the index is reading the spray rather than lab noise.
| Criterion | Requirement | Measured — THCa tracer | Measured — CBGa tracer | Result |
|---|---|---|---|---|
| Spread across positions | RSD ≤ 5.0% | 2.6% | 2.7% | Pass |
| Every individual sample | 90.0 – 110.0% of mean | 97.6 – 104.7 | 96.2 – 104.2 | Pass |
| Drum position | Deposition index — THCa tracer | Deposition index — CBGa tracer |
|---|---|---|
| Top front | 100.7 | 100.7 |
| Top middle | 99.9 | 98.4 |
| Top back | 98.6 | 99.2 |
| Bottom front | 104.7 | 104.2 |
| Bottom middle | 98.5 | 101.4 |
| Bottom back | 97.6 | 96.2 |
| RSD | 2.6% | 2.7% |
| Range | 97.6 – 104.7 | 96.2 – 104.2 |
Scope
This is a field test on one commercial batch. It establishes how evenly the FX-8 distributes distillate across the drum, as measured by an independent, state-licensed lab. The certificates were issued as informational potency reports rather than state compliance panels; the instrument and method are the same. Results relate to the batch tested.
About Detroit Dispensing Solutions
Detroit Dispensing Solutions delivers precision-engineered dispensing and post-processing equipment that empowers cannabis processors to scale efficiently, improve consistency, and stay ahead of the industry curve. The FX-8 is the DDS flower infusion machine, built for high-volume infused pre-roll and infused flower production.
Need Assistance?
Phone +1 947 941-4489 · Email sales@detroitdispensingsolutions.com
Detroit Dispensing Solutions, LLC · 1179 Maplelawn Drive, Troy, Michigan 48084 USA
Frequently asked questions
How uniform is infusion in the FX-8 flower infusion machine?
Distillate deposition was uniform at every position in the FX-8 drum. Across six samples pulled from top and bottom rows, front to back, distillate per gram of flower varied 2.6% RSD, and every position landed within ±5% of the batch mean.
Why does infusion uniformity matter for infused pre-rolls?
An infused pre-roll is sold on one labeled potency, and every unit in the batch has to earn it. Uneven infusion produces hot and cold units from the same drum: label claims that miss on retest, an inconsistent consumer experience, and a batch whose average hides its spread. Spray uniformity decides whether the labeled potency describes one unit or all of them.
How do you test whether flower was infused evenly?
Distillate is fully decarboxylated: it carries Δ9-THC and essentially no THCa or CBGa. Flower is the opposite — its cannabinoids are mostly in the acid form. So in the finished product, Δ9-THC comes from the spray and THCa comes from the flower. The ratio of Δ9-THC to THCa in any sample is the distillate loading on that sample's flower. If the spray were uneven, that ratio would swing from position to position. CBGa, another flower-only acid, gives a second, independent check.
Why can't total THC testing show whether flower was infused evenly?
A one-gram sample of milled flower is not a fixed amount of flower. Fines, moisture and trichome density vary from grab to grab, and that variation moves every cannabinoid in the sample together — distillate included. Reading total THC per sample mixes the flower's own variation with the machine's. The ratio strips the flower out and isolates what the FX-8 controls.
Who tested the FX-8's infusion uniformity, and how?
One production batch of milled flower was infused on the FX-8 at a customer site and sampled at six points in the drum after the run. Every sample went to the same independent lab in one submission. Lab: PuEr Lab, Warren, MI — independent, state-licensed (AU-SC-000121). Method: HPLC-PDA cannabinoid potency (Shimadzu, method CHEM-001).
Does the FX-8 meet pharmaceutical blend-uniformity criteria?
Pharmaceutical blend-uniformity criteria are the test a powder blend must pass before it can be pressed into tablets or filled into capsules — the standard for making every dose the same. The widely applied acceptance criteria, set out in FDA guidance and still in common use, are:
- RSD across the blend samples ≤ 5.0%
- Every individual sample within 90.0 – 110.0% of the mean
Every drum position passed both criteria on both tracers.
What is the FX-8 used for?
The FX-8 is the DDS flower infusion machine, built for high-volume infused pre-roll and infused flower production.
Get an FX-8 quoteSee the FX-8 flower infusion machine
Run your own numbers: FX-8 ROI calculator · FX-8 potency calculator
Related reading
Distillate deposition was uniform at every position in the FX-8 drum. Across six samples pulled from top and bottom rows, front to back, distillate per gram of flower varied 2.6% RSD, and every position landed within ±5% of the batch mean.
That meets the acceptance criteria used for pharmaceutical powder-blend uniformity with room to spare. Two independent tracers gave the same answer, and the measured spread sits at the resolution limit of a single third-party HPLC test: the machine is at least as uniform as the lab can resolve.
White paper · Detroit Dispensing Solutions · Prepared by Chris Joseph · September 2026
RESULT
2.6%
RSD of distillate deposition across six drum positions
±5%
Every position within 5% of the batch mean (range 97.6 – 104.7)
Pass
Pharmaceutical blend-uniformity criteria: RSD ≤ 5%, all samples within 90 – 110% of mean
Planning infused pre-rolls or infused flower? See what the FX-8 would earn on your prices and weekly volume with the FX-8 ROI calculator, or work out how much distillate, rosin or kief to add for your target potency with the infusion potency calculator.
Prefer to talk it through? Call us at +1 947 941-4489.
Get an FX-8 quote See the FX-8 flower infusion machine
Why uniformity matters
An infused pre-roll is sold on one labeled potency, and every unit in the batch has to earn it. Uneven infusion produces hot and cold units from the same drum: label claims that miss on retest, an inconsistent consumer experience, and a batch whose average hides its spread. Spray uniformity decides whether the labeled potency describes one unit or all of them.
Test description
One production batch of milled flower was infused on the FX-8 at a customer site and sampled at six points in the drum after the run. Every sample went to the same independent lab in one submission.
| Site | Licensed Michigan processor, live production run |
|---|---|
| Machine | DDS FX-8 |
| Material | Milled flower, single batch, infused with a distillate and terpene blend |
| Sampling | Six samples pulled from the drum after the run: top and bottom rows at front, middle and back |
| Lab | PuEr Lab, Warren, MI — independent, state-licensed (AU-SC-000121) |
| Method | HPLC-PDA cannabinoid potency (Shimadzu, method CHEM-001) |
| Reports | Samples received Sept 9, 2026; results issued Sept 10, 2026. |
How uniformity is measured
The question is whether every gram of flower received the same amount of distillate. The chemistry gives a direct way to answer it.
Distillate is fully decarboxylated: it carries Δ9-THC and essentially no THCa or CBGa. Flower is the opposite — its cannabinoids are mostly in the acid form. So in the finished product, Δ9-THC comes from the spray and THCa comes from the flower. The ratio of Δ9-THC to THCa in any sample is the distillate loading on that sample's flower. If the spray were uneven, that ratio would swing from position to position. CBGa, another flower-only acid, gives a second, independent check.
Δ9-THC
comes from the spray
÷
THCa
comes from the flower
=
Distillate loading
on that sample's flower
Why total potency alone gives the wrong picture. A one-gram sample of milled flower is not a fixed amount of flower. Fines, moisture and trichome density vary from grab to grab, and that variation moves every cannabinoid in the sample together — distillate included. Reading total THC per sample mixes the flower's own variation with the machine's. The ratio strips the flower out and isolates what the FX-8 controls.
Reading the numbers
RSD (relative standard deviation) is the spread of a set of measurements expressed as a percentage of their average: standard deviation divided by mean. An RSD of 2.6% means a typical sample sits within about 2.6% of the average, and the extremes within roughly twice that. Lower is more uniform.
Pharmaceutical blend-uniformity criteria are the test a powder blend must pass before it can be pressed into tablets or filled into capsules — the standard for making every dose the same. The widely applied acceptance criteria, set out in FDA guidance and still in common use, are:
- RSD across the blend samples ≤ 5.0%
- Every individual sample within 90.0 – 110.0% of the mean
Lab resolution. A single HPLC potency test carries its own repeatability of roughly 2 – 3% RSD. Any process reading at or below that level is at the floor of what one round of third-party testing can distinguish.
Results
Every drum position passed both criteria on both tracers. The deposition index is each sample's Δ9-THC ÷ THCa ratio (and Δ9-THC ÷ CBGa for the second tracer) expressed against the six-sample mean, with the mean set to 100. A value of 104.7 means that position carried 4.7% more distillate per unit of flower than the batch average.
Deposition index at six drum positions. The full spread from lowest to highest position is 7 points on a scale where the pass window is 20 points wide. The two tracers agree on the high position (bottom front) and the low position (bottom back), which confirms the index is reading the spray rather than lab noise.
| Criterion | Requirement | Measured — THCa tracer | Measured — CBGa tracer | Result |
|---|---|---|---|---|
| Spread across positions | RSD ≤ 5.0% | 2.6% | 2.7% | Pass |
| Every individual sample | 90.0 – 110.0% of mean | 97.6 – 104.7 | 96.2 – 104.2 | Pass |
| Drum position | Deposition index — THCa tracer | Deposition index — CBGa tracer |
|---|---|---|
| Top front | 100.7 | 100.7 |
| Top middle | 99.9 | 98.4 |
| Top back | 98.6 | 99.2 |
| Bottom front | 104.7 | 104.2 |
| Bottom middle | 98.5 | 101.4 |
| Bottom back | 97.6 | 96.2 |
| RSD | 2.6% | 2.7% |
| Range | 97.6 – 104.7 | 96.2 – 104.2 |
Scope
This is a field test on one commercial batch. It establishes how evenly the FX-8 distributes distillate across the drum, as measured by an independent, state-licensed lab. The certificates were issued as informational potency reports rather than state compliance panels; the instrument and method are the same. Results relate to the batch tested.
About Detroit Dispensing Solutions
Detroit Dispensing Solutions delivers precision-engineered dispensing and post-processing equipment that empowers cannabis processors to scale efficiently, improve consistency, and stay ahead of the industry curve. The FX-8 is the DDS flower infusion machine, built for high-volume infused pre-roll and infused flower production.
Need Assistance?
Phone +1 947 941-4489 · Email sales@detroitdispensingsolutions.com
Detroit Dispensing Solutions, LLC · 1179 Maplelawn Drive, Troy, Michigan 48084 USA
Frequently asked questions
How uniform is infusion in the FX-8 flower infusion machine?
Distillate deposition was uniform at every position in the FX-8 drum. Across six samples pulled from top and bottom rows, front to back, distillate per gram of flower varied 2.6% RSD, and every position landed within ±5% of the batch mean.
Why does infusion uniformity matter for infused pre-rolls?
An infused pre-roll is sold on one labeled potency, and every unit in the batch has to earn it. Uneven infusion produces hot and cold units from the same drum: label claims that miss on retest, an inconsistent consumer experience, and a batch whose average hides its spread. Spray uniformity decides whether the labeled potency describes one unit or all of them.
How do you test whether flower was infused evenly?
Distillate is fully decarboxylated: it carries Δ9-THC and essentially no THCa or CBGa. Flower is the opposite — its cannabinoids are mostly in the acid form. So in the finished product, Δ9-THC comes from the spray and THCa comes from the flower. The ratio of Δ9-THC to THCa in any sample is the distillate loading on that sample's flower. If the spray were uneven, that ratio would swing from position to position. CBGa, another flower-only acid, gives a second, independent check.
Why can't total THC testing show whether flower was infused evenly?
A one-gram sample of milled flower is not a fixed amount of flower. Fines, moisture and trichome density vary from grab to grab, and that variation moves every cannabinoid in the sample together — distillate included. Reading total THC per sample mixes the flower's own variation with the machine's. The ratio strips the flower out and isolates what the FX-8 controls.
Who tested the FX-8's infusion uniformity, and how?
One production batch of milled flower was infused on the FX-8 at a customer site and sampled at six points in the drum after the run. Every sample went to the same independent lab in one submission. Lab: PuEr Lab, Warren, MI — independent, state-licensed (AU-SC-000121). Method: HPLC-PDA cannabinoid potency (Shimadzu, method CHEM-001).
Does the FX-8 meet pharmaceutical blend-uniformity criteria?
Pharmaceutical blend-uniformity criteria are the test a powder blend must pass before it can be pressed into tablets or filled into capsules — the standard for making every dose the same. The widely applied acceptance criteria, set out in FDA guidance and still in common use, are:
- RSD across the blend samples ≤ 5.0%
- Every individual sample within 90.0 – 110.0% of the mean
Every drum position passed both criteria on both tracers.
What is the FX-8 used for?
The FX-8 is the DDS flower infusion machine, built for high-volume infused pre-roll and infused flower production.
Get an FX-8 quoteSee the FX-8 flower infusion machine
Run your own numbers: FX-8 ROI calculator · FX-8 potency calculator
Related reading