Abstract: An elution test method measures the elution process of a specific component in a process where a preparation containing at least the specific component subject to a change with time in chemical properties after elution and an impurity component not subject to a change with time in chemical properties after elution is eluted into a test liquid. The method obtains a ratio of absorbance k of the impurity component and a ratio of absorbance k? of the specific component at two isosbestic point wavelengths ?1, ?2 in a spectrum including the specific component and its decomposed matter, and calculates at least one of the absorbances A1(t), A2(t) of said specific component by using k×C2(t)?C1(t)=k×A2(t)?A1(t) and A1(t)/A2(t)=k? from the absorbance C1(t), C2(t) at said two isosbestic point wavelengths ?1, ?2 measured at the plural time points t in the elution process of said preparation, and converts the result to an elution concentration.

Abstract: An elution test method measures the elution process of a specific component in a process where a preparation containing at least the specific component subject to a change with time in chemical properties after elution and an impurity component not subject to a change with time in chemical properties after elution is eluted into a test liquid. The method obtains a ratio of absorbance k of the impurity component and a ratio of absorbance k? of the specific component at two isosbestic point wavelengths ?1, ?2 in a spectrum including the specific component and its decomposed matter, and calculates at least one of the absorbances A1(t), A2(t) of said specific component by using k×C2(t)?C1(t)=k×A2(t)?A1(t) and A1(t)/A2(t)=k? from the absorbance C1(t), C2(t) at said two isosbestic point wavelengths ?1, ?2 measured at the plural time points t in the elution process of said preparation, and converts the result to an elution concentration.

Abstract: A band type strapping machine comprises a band feeding roller and a band returning roller wherein a first pressing roller is placed above the band feeding roller so as to be able to come in contact with the feeding roller, a second pressing roller is placed below the band returning roller so as to be able to come in contact with the returning roller and the band feeding roller and the band returing roller are driven in the same direction by a motor.

Abstract: A band type strapping machine comprises a swing lever, pivotally supporting a gripper for gripping a band, adapted to swing according to the rotation of a cam mounted on a cam shaft, a control bar engaged with the swing lever to follow the movement of the swing lever, a driving roller operating to engage with a band tightening roller, the driving roller being strongly brought into contact with the band tightening roller rotated at a low speed, high torque by actuation of a solenoid.

Abstract: A band type strapping machine comprises a feeding and tightening roller driven by a motor, an auxiliary roller in contact with the feeding and tightening roller, a cam shaft which is rotated by the motor through a reduction gear and a clutch mechanism and which has cams for respectively actuating a rear gripper, a heater, a press bar and a front gripper, wherein the motor is capable of instantaneous change of normal and reverse rotations and has a large starting torque, and an electromagnetic clutch is fitted to the rotary shaft of the tightening and feeding roller so as to be movable in the axial direction depending upon increase of a band tightening force whereby detection of the tightening force caused by the movement of the electromagnetic clutch is mechanically related to the engagement or disengagement of the clutch mechanism.