A spectroscopic assembly, comprising: a spectrometer, the spectrometer including an illumination source to generate a light to illuminate a sample, the spectrometer including a sensor to obtain a spectroscopic measurement based on light, reflected by the sample, from the light illuminating the sample; and a light pipe to transfer the light reflected from the sample to the spectrometer, the light pipe including: a single cavity, a first opening to receive the spectrometer in a first portion of the cavity, the first portion having a first diameter, a mounting surface perpendicular to the sidewall of the cavity, such that when the spectrometer is received through the first opening the spectrometer is positioned contiguous to the mounting surface, and a second opening to receive the sample in a second portion of the cavity, the second portion having a second diameter, wherein the diameter of the first portion is greater than the diameter of the second portion, the first portion extends from the first opening to the mounting surface and the second portion extends from the second opening to the mounting surface, where the second portion of the cavity of the light pipe is configured to enclose the sample and the light pipe is configured to align the illumination source and the sensor of the spectrometer with the sample, where the diameter of the first portion is constant extending from the first opening to the mounting surface, and where the diameter of the second portion is constant extending from the second opening to the mounting surface. a spectrometer, the spectrometer including an illumination source to generate a light to illuminate a sample, the spectrometer including a sensor to obtain a spectroscopic measurement based on light, reflected by the sample, from the light illuminating the sample; and the spectrometer including an illumination source to generate a light to illuminate a sample, the spectrometer including a sensor to obtain a spectroscopic measurement based on light, reflected by the sample, from the light illuminating the sample; and a light pipe to transfer the light reflected from the sample to the spectrometer, the light pipe including: a single cavity, a first opening to receive the spectrometer in a first portion of the cavity, the first portion having a first diameter, a mounting surface perpendicular to the sidewall of the cavity, such that when the spectrometer is received through the first opening the spectrometer is positioned contiguous to the mounting surface, and a second opening to receive the sample in a second portion of the cavity, the second portion having a second diameter, wherein the diameter of the first portion is greater than the diameter of the second portion, the first portion extends from the first opening to the mounting surface and the second portion extends from the second opening to the mounting surface, where the second portion of the cavity of the light pipe is configured to enclose the sample and the light pipe is configured to align the illumination source and the sensor of the spectrometer with the sample, where the diameter of the first portion is constant extending from the first opening to the mounting surface, and where the diameter of the second portion is constant extending from the second opening to the mounting surface. a single cavity, a first opening to receive the spectrometer in a first portion of the cavity, the first portion having a first diameter, a mounting surface perpendicular to the sidewall of the cavity, such that when the spectrometer is received through the first opening the spectrometer is positioned contiguous to the mounting surface, and a second opening to receive the sample in a second portion of the cavity, the second portion having a second diameter, wherein the diameter of the first portion is greater than the diameter of the second portion, the first portion extends from the first opening to the mounting surface and the second portion extends from the second opening to the mounting surface, where the second portion of the cavity of the light pipe is configured to enclose the sample and the light pipe is configured to align the illumination source and the sensor of the spectrometer with the sample, where the diameter of the first portion is constant extending from the first opening to the mounting surface, and where the diameter of the second portion is constant extending from the second opening to the mounting surface.