Analysis considering the use of the JKL MLH horizontal in-line sampler, which incorporates a high-intensity agitation system upstream of sample collection.

When the JKL MLH system is used, the impact shifts from being merely “good by equiprobabilistic design” to very high, because the MLH adds a key feature: high-intensity agitation / homogenization prior to sampling, directly addressing the distribution heterogeneity (segregation/stratification) typically found in horizontal slurry lines.

1) Metrological impact: lower bias due to DE/EE and lower variability due to segregation

• The MLH diverts the process stream into an internal homogenizing tank equipped with a vertical impeller and baffles, specifically intended to reduce segregation and density stratification errors before the sample cut is taken.
• Homogenization within the MLH minimizes extraction and delimitation errors and prevents sedimentation in dense slurries.
• ISO 11794 notes that DE and EE commonly arise from incorrect cutter design or operation, and that DE may generate bias (non-zero mean error); therefore, any solution that stabilizes the flow and enables more regular sample cuts reduces the risk of bias.

Result: With the MLH, not only is bias from an improperly executed cut reduced, but also the probability that a cut that is theoretically correct becomes incorrect in practice due to stratification (a heavy/high-grade layer near the bottom), which is typical of horizontal pipelines.

2) Impact on GE (segregation and grouping): agitation helps, but it does not “work miracles” on FE

• ISO 11794 explains that the Fundamental Error (FE) is inherent to constitutional heterogeneity and cannot be eliminated, whereas Grouping and Segregation Error (GE) is associated with distribution heterogeneity and can be reduced through a higher number of increments and better process control.
• Gy is very clear: homogenization acts on distribution heterogeneity, not on constitutional heterogeneity; in other words, it reduces GE, not FE.
• The MLH specifically implements dynamic homogenization (mechanical, forced) prior to sample cutting.

Result: The MLH improves precision (lower dispersion) by reducing GE (less grade fluctuation caused by stratification), but it does not replace the need for an adequate increment sampling plan.

3) Impact of the two-stage scheme (Cut A + Cut B): improved control of TSE and sample preparation

The MLH provides:

• Cut A: first-stage cut (approximately 30% of the homogenized internal flow)
• Cut B: systematic secondary reduction (approximately 2.5%) to produce the final sample

This is important because:

• The first stage provides representative capture, while the second stage makes the sample mass/volume manageable without relying on manual handling, where preparation and transfer errors often increase.
• ISO 11794 emphasizes that DE/EE/PE can be minimized through correct system design.

Result: The MLH tends to reduce the total practical error (TSE / operational TSE) by controlling both sample capture and reduction within the same sampling train under a repeatable operating logic.

4) Specific impact in abrasive slurries: agitation helps, but the real “enemy” is wear

Under abrasive conditions, the critical aspect is ensuring that the system maintains its equiprobabilistic performance over time:

• Through its after-sales service, JKL provides wear monitoring before lips/openings can become distorted and gradually alter the geometry, potentially creating wear-induced bias if left unchecked.
• ISO 11794 requires frequent inspections and verification of openings and design parameters in order to sustain sampling quality and prevent progressive degradation.

Result: With the MLH system, agitation reduces segregation, but the guarantee of sustained equiprobability depends on anti-abrasive linings, dimensional tolerance control, and a formal inspection and maintenance program.

5) Impact on metallurgical accounting: better reconciliation, fewer disputes, greater traceability

• The MLH is specified as a system intended for metallurgical accounting, process control, and mass balance reconciliation.

Conclusion (MLH + High-Intensity Agitation)

The JKL MLH enhances the positive impact of equiprobabilistic sampling because it incorporates intense mechanical homogenization prior to cutting, thereby directly reducing segregation/stratification (↓GE) and helping systematic Cuts A and B operate on a properly conditioned slurry, reducing the probability of practical bias arising from DE/EE. Even so, long-term reliability in abrasive slurry service will depend on maintaining cutter geometry and aperture dimensions through wear-resistant design and periodic inspection/verification.emáticos A y B trabajen sobre una pulpa “condicionada”, bajando la probabilidad de bias por DE/EE en la práctica. Aun así, la confiabilidad a largo plazo en pulpas abrasivas dependerá de mantener geometría y aperturas mediante diseño antiabrasivo e inspección/verificación periódica.